Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petriv » petris (Expand Search), petrov (Expand Search), peteriv (Expand Search), petruiv (Expand Search), petroiv (Expand Search)
petruiv » peteruiv (Expand Search), petruuiv (Expand Search), petrouiv (Expand Search)
petruuiv » peteruuiv (Expand Search), petruuuiv (Expand Search), petrouuiv (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (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 ((peterov OR (petriv OR (petruiv OR petruuiv))) OR (peteruo OR (petr OR petri))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR (petriv OR (petruiv OR petruuiv))) OR (peteruo OR (petr OR petri))) o.s.*".