Perhaps you should try some spelling variations:
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petriv » peteriv (Expand Search), petriiv (Expand Search), petruiv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petrioiuo » peterioiuo (Expand Search), petriioiuo (Expand Search), petruioiuo (Expand Search)
petriioiuo » peteriioiuo (Expand Search), petriiioiuo (Expand Search), petruiioiuo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 ((petruov OR petriv) OR ((petriu OR (petrioiuo OR petriioiuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruov OR petriv) OR ((petriu OR (petrioiuo OR petriioiuo)) OR petr)) o.s.*".