Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
petruuuiov » peteruuuiov (Expand Search), petriuuuiov (Expand Search), petruuuuiov (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petruo » peteruo (Expand Search), petriuo (Expand Search), petruuo (Expand Search)
petruiu » peteruiu (Expand Search), petriuiu (Expand Search), petruuiu (Expand Search)
petruiiu » peteruiiu (Expand Search), petriuiiu (Expand Search), petruuiiu (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 ((petruuuiov OR (petruov OR petriuov)) OR ((petruo OR (petruiu OR petruiiu)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruuuiov OR (petruov OR petriuov)) OR ((petruo OR (petruiu OR petruiiu)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petruuuiov OR (petruov OR petriuov)) OR ((petruo OR (petruiu OR petruiiu)) OR petr)) o.s.*.