Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petroov » petrovov (Expand Search), petruov (Expand Search), petrov (Expand Search)
petrovuuov » petrovvuuov (Expand Search), petruvuuov (Expand Search), petrvuuov (Expand Search)
petrouiov » petrovuiov (Expand Search), petruuiov (Expand Search), petruiov (Expand Search)
petrovu » petrovvu (Expand Search), petruvu (Expand Search), petrvu (Expand Search)
petro » petrov (Expand Search), petru (Expand Search), petr (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 (((petroov OR (petrovuuov OR peteruov)) OR petrouiov) OR ((petrovu OR petri) OR petro)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (((petroov OR (petrovuuov OR peteruov)) OR petrouiov) OR ((petrovu OR petri) OR petro)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (((petroov OR (petrovuuov OR peteruov)) OR petrouiov) OR ((petrovu OR petri) OR petro)) o.s.*.