Perhaps you should try some spelling variations:
petriv » peteriv (Expand Search), petriiv (Expand Search), petroiv (Expand Search)
petriov » peteriov (Expand Search), petriiov (Expand Search), petroiov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petrouv (Expand Search)
petrov » peterov (Expand Search), petriov (Expand Search), petroov (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 (petriv OR (((petriov OR petruv) OR petruv) OR ((petrov OR (petru OR peteru)) OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriv OR (((petriov OR petruv) OR petruv) OR ((petrov OR (petru OR peteru)) OR petr))) o.s.*".