Perhaps you should try some spelling variations:
peteroi » peterdi (Expand Search)
petruiv » petriuiv (Expand Search), petruuiv (Expand Search), petrouiv (Expand Search)
petruuiv » petriuuiv (Expand Search), petruuuiv (Expand Search), petrouuiv (Expand Search)
petruio » petriuio (Expand Search), petruuio (Expand Search), petrouio (Expand Search)
petrouuio » petriouuio (Expand Search), petruouuio (Expand Search), petroouuio (Expand Search)
petr » petri (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 ((petruiv OR petruuiv) OR ((peteroi OR (petruio OR petrouuio)) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petruiv OR petruuiv) OR ((peteroi OR (petruio OR petrouuio)) OR (petr OR peter))) o.s.*".