Perhaps you should try some spelling variations:
persa » persas, perla, versa
erba » yerba, verba, werba
verbos » veros, verbes, verdos, veryos, erbos
erbos » eros, erbes, erdos
verb » ver, very, erb
verbo » vero, veryo, erbo
vera » vega, ver, sera
verso » versos

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "Russian (((persa OR erba) OR (verbos OR erbos)) OR ((verb OR (vera OR era)) OR (verbo OR verso)))~".
• Adding a wildcard symbol may retrieve word variants: Russian (((persa OR erba) OR (verbos OR erbos)) OR ((verb OR (vera OR era)) OR (verbo OR verso)))*.