Actually, those language you attached is controlled by the module's title itself as listed below at Backend>Extension>Module
Leaderboard = mod_easysocial_leaderboard
Recent Albums = mod_easysocial_albums
Recent Users = mod_easysocial_users
Search For people = mod_easysocial_dating_search
Online Users = mod_easysocial_users
Unfortunately, we cant achieved this feature currently. But it would be best if you can submit a feature request regarding this issues by creating a new ticket on the forums and set it to "Feature Request", so everyone else could vote for it, the more people request on this, and we will priority consider it.