Perhaps you should try some spelling variations:
petruouv » petrov (Expand Search), peteruouv (Expand Search), petriuouv (Expand Search), petruuouv (Expand Search)
peteroov » petrov (Expand Search)
petriiiiv » peteriiiiv (Expand Search), petriiiiiv (Expand Search), petruiiiiv (Expand Search)
petruuouv » peteruuouv (Expand Search), petriuuouv (Expand Search), petruuuouv (Expand Search)
petrou » peterou (Expand Search), petriou (Expand Search), petruou (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 ((petriiiiv OR (petruouv OR petruuouv)) OR (((petrou OR peteroov) OR peteruuuo) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiiiv OR (petruouv OR petruuouv)) OR (((petrou OR peteroov) OR peteruuuo) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriiiiv OR (petruouv OR petruuouv)) OR (((petrou OR peteroov) OR peteruuuo) OR petr)) o.s.*.