Perhaps you should try some spelling variations:
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petriiuuov » peteriiuuov (Expand Search), petriiiuuov (Expand Search), petruiiuuov (Expand Search)
petruiuuov » peteruiuuov (Expand Search), petriuiuuov (Expand Search), petruuiuuov (Expand Search)
petruoou » peteruoou (Expand Search), petriuoou (Expand Search), petruuoou (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((petruov OR ((petriiuuov OR petruiuuov) OR petriiov)) OR ((petruoou OR peteroi) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruov OR ((petriiuuov OR petruiuuov) OR petriiov)) OR ((petruoou OR peteroi) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petruov OR ((petriiuuov OR petruiuuov) OR petriiov)) OR ((petruoou OR peteroi) OR petr)) o.s.*.