Perhaps you should try some spelling variations:
petruov » petrov (Expand Search), petriuov (Expand Search), petruuov (Expand Search), petrouov (Expand Search)
petroio » petrioio (Expand Search), petruoio (Expand Search), petrooio (Expand Search)
petruuuio » petriuuuio (Expand Search), petruuuuio (Expand Search), petrouuuio (Expand Search)
petriuuuio » petriiuuuio (Expand Search), petruiuuuio (Expand Search), petroiuuuio (Expand Search)
petriiuio » petriiiuio (Expand Search), petruiiuio (Expand Search), petroiiuio (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 (petruov OR ((petroio OR ((petruuuio OR petriuuuio) OR petriiuio)) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruov OR ((petroio OR ((petruuuio OR petriuuuio) OR petriiuio)) OR (petr OR peter))) o.s.*".