I've translated forms and a few pages with CVS, and inline translation to get the scope. But these form options aren't selectable with inline book...
I've managed to translate "Catalog Advanced Search", "Search Settings" and "Search" in CVS, but I have no idea how to translate attributes.
Here's catalogsearch/advanced/form.phtml
<?php
/**
* Magento
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE_AFL.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@magentocommerce.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade Magento to newer
* versions in the future. If you wish to customize Magento for your
* needs please refer to http://www.magentocommerce.com for more information.
*
* @category design
* @package base_default
* @copyright Copyright (c) 2014 Magento Inc. (http://www.magentocommerce.com)
* @license http://opensource.org/licenses/afl-3.0.php Academic Free License (AFL 3.0)
*/
?>
<?php
/**
* Catalog advanced search form
*
* @see Mage_CatalogSearch_Block_Advanced_Form
*/
?>
<?php $maxQueryLength= $this->helper('catalogsearch')->getMaxQueryLength();?>
<div class="page-title">
<h1><?php echo $this->__('Catalog Advanced Search') ?></h1>
</div>
<?php echo $this->getMessagesBlock()->getGroupedHtml() ?>
<form action="<?php echo $this->getSearchPostUrl() ?>" method="get" id="form-validate">
<div class="fieldset advanced-search">
<h2 class="legend"><?php echo $this->__('Search Settings') ?></h2>
<ul class="form-list" id="advanced-search-list">
<?php foreach ($this->getSearchableAttributes() as $_attribute): ?>
<?php $_code = $_attribute->getAttributeCode() ?>
<li>
<label for="<?php echo $_code ?>"><?php echo $this->getAttributeLabel($_attribute) ?></label>
<?php switch($this->getAttributeInputType($_attribute)):
case 'number': ?>
<div class="input-range">
<input type="text" name="<?php echo $_code ?>[from]" value="<?php echo $this->escapeHtml($this->getAttributeValue($_attribute, 'from')) ?>" id="<?php echo $_code ?>" title="<?php echo $this->escapeHtml($this->getAttributeLabel($_attribute)) ?>" class="input-text validate-number" maxlength="<?php echo $maxQueryLength;?>" />
<span class="separator">-</span>
<input type="text" name="<?php echo $_code ?>[to]" value="<?php echo $this->escapeHtml($this->getAttributeValue($_attribute, 'to')) ?>" id="<?php echo $_code ?>_to" title="<?php echo $this->escapeHtml($this->getAttributeLabel($_attribute)) ?>" class="input-text validate-number" maxlength="<?php echo $maxQueryLength;?>" />
</div>
<?php break;
case 'price': ?>
<div class="input-range">
<input name="<?php echo $_code ?>[from]" value="<?php echo $this->escapeHtml($this->getAttributeValue($_attribute, 'from')) ?>" id="<?php echo $_code ?>" title="<?php echo $this->escapeHtml($this->getAttributeLabel($_attribute)) ?>" class="input-text validate-number" type="text" maxlength="<?php echo $maxQueryLength;?>" />
<span class="separator">-</span>
<input name="<?php echo $_code ?>[to]" value="<?php echo $this->escapeHtml($this->getAttributeValue($_attribute, 'to')) ?>" id="<?php echo $_code ?>_to" title="<?php echo $this->escapeHtml($this->getAttributeLabel($_attribute)) ?>" class="input-text validate-number" type="text" maxlength="<?php echo $maxQueryLength;?>" />
<small>(<?php echo $this->getCurrency($_attribute); ?>)</small>
</div>
<?php break;
case 'select': ?>
<div class="input-box">
<?php echo $this->getAttributeSelectElement($_attribute) ?>
</div>
<?php break;
case 'yesno': ?>
<?php echo $this->getAttributeYesNoElement($_attribute) ?>
<?php break;
case 'date': ?>
<div class="input-range">
<?php echo $this->getDateInput($_attribute, 'from') ?>
<span class="separator">-</span>
<?php echo $this->getDateInput($_attribute, 'to') ?>
</div>
<?php break;
default: ?>
<div class="input-box">
<input type="text" name="<?php echo $_code ?>" id="<?php echo $_code ?>" value="<?php echo $this->escapeHtml($this->getAttributeValue($_attribute)) ?>" title="<?php echo $this->escapeHtml($this->getAttributeLabel($_attribute)) ?>" class="input-text <?php echo $this->getAttributeValidationClass($_attribute) ?>" maxlength="<?php echo $maxQueryLength;?>" />
</div>
<?php endswitch; ?>
</li>
<?php endforeach; ?>
</ul>
<script type="text/javascript">decorateList('advanced-search-list')</script>
</div>
<div class="buttons-set">
<button type="submit" title="<?php echo $this->__('Search') ?>" class="button"><span><span><?php echo $this->__('Search') ?></span></span></button>
</div>
</form>
<script type="text/javascript">
//<![CDATA[
var dataForm = new VarienForm('form-validate', true);
//]]>
</script>