Perhaps you should try some spelling variations:
peteriov » petrov (Expand Search)
petriov » peteriov (Expand Search), petruiov (Expand Search), petroiov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petruio » peteruio (Expand Search), petruuio (Expand Search), petrouio (Expand Search)
petruoio » peteruoio (Expand Search), petruuoio (Expand Search), petrouoio (Expand Search)
petruuuoio » peteruuuoio (Expand Search), petruuuuoio (Expand Search), petrouuuoio (Expand Search)
petr » peter (Expand Search), petru (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 ((petriov OR peteriov) OR ((petri OR (petruio OR (petruoio OR petruuuoio))) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriov OR peteriov) OR ((petri OR (petruio OR (petruoio OR petruuuoio))) OR petr)) o.s.*".