Translation

I’m translating the Plugin to meet native language site es_ES; I′ve translated the 60% of plugin and I’m getting nice results but, I can’t find de lines to translate the search form dropdown fields. For example says “all offer types” translation must be “Todo tipos de oferta” but shows “All tipos de oferta” also custom fields are untranlatable like “All Bedrooms” and “All Bathrooms” where can I ommit the “All” from the dropdowns.

The page I need help with: [log in to see the link]