Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petruoov (Expand Search)
petruuui » peteruuui (Expand Search), petriuuui (Expand Search), petruuuui (Expand Search)
petriuiuo » peteriuiuo (Expand Search), petriiuiuo (Expand Search), petruiuiuo (Expand Search)
petroouiuo » peteroouiuo (Expand Search), petrioouiuo (Expand Search), petruoouiuo (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 ((peteruov OR petroov) OR ((petruuui OR (petriuiuo OR petroouiuo)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteruov OR petroov) OR ((petruuui OR (petriuiuo OR petroouiuo)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteruov OR petroov) OR ((petruuui OR (petriuiuo OR petroouiuo)) OR petr)) o.s.*.