Perhaps you should try some spelling variations:
petruuov » petrov (Expand Search), peteruuov (Expand Search), petruuuov (Expand Search), petrouuov (Expand Search)
petriiov » petrov (Expand Search), peteriiov (Expand Search), petruiiov (Expand Search), petroiiov (Expand Search)
petruuiuov » peteruuiuov (Expand Search), petruuuiuov (Expand Search), petrouuiuov (Expand Search)
petriiuov » peteriiuov (Expand Search), petruiiuov (Expand Search), petroiiuov (Expand Search)
petriov » peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (Expand Search), petro (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 (((petruuiuov OR petriiuov) OR ((petriov OR petruuov) OR petriiov)) OR (petri OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petruuiuov OR petriiuov) OR ((petriov OR petruuov) OR petriiov)) OR (petri OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petruuiuov OR petriiuov) OR ((petriov OR petruuov) OR petriiov)) OR (petri OR petr)) o.s.*.