Hi @azza69,

The string that you’re looking for need to be translated from the BP Search Profile plugin. That plugin doesn’t provide a POT file, so we created one with all the strings from that plugin which you can download here:
https://files.themosaurus.com/bp-profile-search/bp-profile-search.pot

Once you have translated the strings you need, you should have a bp-profile-search-en_US.mo and bp-profile-search-en_US.po file that you will place in the wp-content/languages/plugins directory of your site. For other languages than English, please replace en_US from the file name by the language code of your choice, for instance fr_FR for french from France.

Please keep us updated if this helped you with the translation of your website.

Best,