Perhaps you should try some spelling variations:
petrov » petro (Expand Search), peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petruuov » peteruuov (Expand Search), petriuuov (Expand Search), petruuuov (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search), petru (Expand Search), petro (Expand Search)
peteriov » peterov (Expand Search), petriov (Expand Search), petersov (Expand Search)
peteri » peter (Expand Search), petri (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 ((peteriov OR (petrov OR petruuov)) OR ((petr OR petruo) OR (peteri OR peterdi))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteriov OR (petrov OR petruuov)) OR ((petr OR petruo) OR (peteri OR peterdi))) o.s.*".