Perhaps you should try some spelling variations:
petrouv » peterouv (Expand Search), petroouv (Expand Search), perouv (Expand Search)
petruuv » peteruuv (Expand Search), petrouuv (Expand Search), peruuv (Expand Search)
petri » peteri (Expand Search), petroi (Expand Search), peri (Expand Search)
petruo » peteruo (Expand Search), petrouo (Expand Search), peruo (Expand Search)
petru » peteru (Expand Search), petrou (Expand Search), peru (Expand Search)
petr » peter (Expand Search), petro (Expand Search), per (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 ((petrouv OR petruuv) OR ((petri OR (petruo OR peterouuo)) OR (petru OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petrouv OR petruuv) OR ((petri OR (petruo OR peterouuo)) OR (petru OR petr))) o.s.*".