Perhaps you should try some spelling variations:
periov » petriov (Expand Search)
peri » petri (Expand Search)
peru » petru (Expand Search)
petruov » peteruov (Expand Search), petriuov (Expand Search), petruuov (Expand Search)
petruuuiov » peteruuuiov (Expand Search), petriuuuiov (Expand Search), petruuuuiov (Expand Search)
petriou » peteriou (Expand Search), petriiou (Expand Search), petruiou (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 ((petruov OR (petruuuiov OR periov)) OR ((((peri OR per) OR petriou) OR peru) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruov OR (petruuuiov OR periov)) OR ((((peri OR per) OR petriou) OR peru) OR petr)) o.s.*".