Perhaps you should try some spelling variations:
petroov » peteroov (Expand Search), petrioov (Expand Search), petrooov (Expand Search)
petriiiuv » peteriiiuv (Expand Search), petriiiiuv (Expand Search), petroiiiuv (Expand Search)
petriiouv » peteriiouv (Expand Search), petriiiouv (Expand Search), petroiiouv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petrooou » peterooou (Expand Search), petriooou (Expand Search), petroooou (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petro (Expand Search)

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 (petriiiuv OR petriiouv)) OR ((petru OR (petrooou OR petrooou)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroov OR (petriiiuv OR petriiouv)) OR ((petru OR (petrooou OR petrooou)) OR petr)) o.s.*".