Perhaps you should try some spelling variations:
petriiov » peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
petruio » peteruio (Expand Search), petriuio (Expand Search), petruuio (Expand Search)
petruuio » peteruuio (Expand Search), petriuuio (Expand Search), petruuuio (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petruov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (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 (petriiov OR ((((petruio OR petruuio) OR (petrov OR petruov)) OR peteruuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriiov OR ((((petruio OR petruuio) OR (petrov OR petruov)) OR peteruuo) OR petr)) o.s.*".