Perhaps you should try some spelling variations:
petroiv » peteroiv (Expand Search), petrioiv (Expand Search), petruoiv (Expand Search)
petruiv » peteruiv (Expand Search), petriuiv (Expand Search), petruuiv (Expand Search)
petruuiv » peteruuiv (Expand Search), petriuuiv (Expand Search), petruuuiv (Expand Search)
petrouo » peterouo (Expand Search), petriouo (Expand Search), petruouo (Expand Search)
petruui » peteruui (Expand Search), petriuui (Expand Search), petruuui (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 ((petroiv OR ((petruiv OR peterdi) OR petruuiv)) OR ((petrouo OR petruui) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petroiv OR ((petruiv OR peterdi) OR petruuiv)) OR ((petrouo OR petruui) OR petr)) o.s.*".