Perhaps you should try some spelling variations:
petrouuv » petrov (Expand Search), peterouuv (Expand Search), petruouuv (Expand Search), petroouuv (Expand Search)
petriuuuv » peteriuuuv (Expand Search), petruiuuuv (Expand Search), petroiuuuv (Expand Search)
petruouov » peteruouov (Expand Search), petruuouov (Expand Search), petrououov (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 ((((petrouuv OR petriuuuv) OR petruouov) OR petriov) OR (petri OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petrouuv OR petriuuuv) OR petruouov) OR petriov) OR (petri OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petrouuv OR petriuuuv) OR petruouov) OR petriov) OR (petri OR petr)) o.s.*.