Perhaps you should try some spelling variations:
petriv » petris (Expand Search), peteriv (Expand Search), petroiv (Expand Search), periv (Expand Search)
petru » pentru (Expand Search), peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petrui » pentrui (Expand Search), peterui (Expand Search), petroui (Expand Search), perui (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (Expand Search)
petrov » peterov (Expand Search), petroov (Expand Search), perov (Expand Search), petro (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((petriv OR petru) OR ((petr OR (petrui OR petri)) OR ((petrov OR petru) OR petriv))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriv OR petru) OR ((petr OR (petrui OR petri)) OR ((petrov OR petru) OR petriv))) o.s.*".