Perhaps you should try some spelling variations:
petruuov » petrov (Expand Search), peteruuov (Expand Search), petriuuov (Expand Search), petruuuov (Expand Search)
peteriio » peterdi (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petruiov (Expand Search)
petriuiiiio » peteriuiiiio (Expand Search), petriiuiiiio (Expand Search), petruiuiiiio (Expand Search)
petriiiiio » peteriiiiio (Expand Search), petriiiiiio (Expand Search), petruiiiiio (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 ((petriov OR petruuov) OR ((peteriio OR (petriuiiiio OR petriiiiio)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR petruuov) OR ((peteriio OR (petriuiiiio OR petriiiiio)) OR petr)) o.s.*".