Perhaps you should try some spelling variations:
peterov » petrov (Expand Search)
petrv » petrov (Expand Search), petru (Expand Search), petro (Expand Search), peterv (Expand Search), petruv (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (Expand Search)
petruou » peteruou (Expand Search), petruuou (Expand Search), petrouou (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
peteru » peter (Expand Search), petru (Expand Search), peters (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 ((petrv OR (petr OR peteru)) OR (peteru OR (petruou OR peterou)))) OR petri) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR ((petrv OR (petr OR peteru)) OR (peteru OR (petruou OR peterou)))) OR petri) o.s.*".