Perhaps you should try some spelling variations:
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
peteriiv » peterdi (Expand Search)
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petruiiiv (Expand Search)
petruuoio » peteruuoio (Expand Search), petriuuoio (Expand Search), petruuuoio (Expand Search)
petriio » peteriio (Expand Search), petriiio (Expand Search), petruiio (Expand Search)
petr » peter (Expand Search), petri (Expand Search), petru (Expand Search)

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: fop ((petriiov OR (petriiiv OR peteriiv)) OR (((petruuoio OR petriio) OR peterou) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriiov OR (petriiiv OR peteriiv)) OR (((petruuoio OR petriio) OR peterou) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriiov OR (petriiiv OR peteriiv)) OR (((petruuoio OR petriio) OR peterou) OR petr)) o.s.*.