Perhaps you should try some spelling variations:
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petroiiov (Expand Search)
petruuv » peteruuv (Expand Search), petriuuv (Expand Search), petrouuv (Expand Search)
petriuiov » peteriuiov (Expand Search), petriiuiov (Expand Search), petroiuiov (Expand Search)
petriuuov » peteriuuov (Expand Search), petriiuuov (Expand Search), petroiuuov (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (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 ((((petriiov OR petruuv) OR (petriiov OR petriuiov)) OR petriuuov) OR (petru OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriiov OR petruuv) OR (petriiov OR petriuiov)) OR petriuuov) OR (petru OR petr)) o.s.*".