Perhaps you should try some spelling variations:
petruuv » peteruuv (Expand Search), petriuuv (Expand Search), petrouuv (Expand Search)
petriiiuuuv » peteriiiuuuv (Expand Search), petriiiiuuuv (Expand Search), petroiiiuuuv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petroov (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petrouo (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (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 ((petruuv OR petriiiuuuv) OR (((petru OR petrov) OR (petruo OR peteruo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruuv OR petriiiuuuv) OR (((petru OR petrov) OR (petruo OR peteruo)) OR petr)) o.s.*".