Perhaps you should try some spelling variations:
petriuuv » peteriuuv (Expand Search), petriiuuv (Expand Search), petruiuuv (Expand Search)
petrouv » peterouv (Expand Search), petriouv (Expand Search), petruouv (Expand Search)
petrooouv » peterooouv (Expand Search), petriooouv (Expand Search), petruooouv (Expand Search)
petruou » peteruou (Expand Search), petriuou (Expand Search), petruuou (Expand Search)
petroi » peteroi (Expand Search), petrioi (Expand Search), petruoi (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (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 ((petriuuv OR (petrouv OR petrooouv)) OR ((petruou OR (petroi OR peteroi)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuuv OR (petrouv OR petrooouv)) OR ((petruou OR (petroi OR peteroi)) OR petr)) o.s.*".