Perhaps you should try some spelling variations:
petruov » petrov (Expand Search), petriuov (Expand Search), petruuov (Expand Search), petrouov (Expand Search)
peteru » petru (Expand Search), peters (Expand Search)
petero » peters (Expand Search), petro (Expand Search)
petriuiu » petriiuiu (Expand Search), petruiuiu (Expand Search), petroiuiu (Expand Search)
petruiuiu » petriuiuiu (Expand Search), petruuiuiu (Expand Search), petrouiuiu (Expand Search)
petr » petri (Expand Search), petru (Expand Search), petro (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 (petruov OR ((peteru OR (petriuiu OR petruiuiu)) OR (petero OR (petr OR peter)))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petruov OR ((peteru OR (petriuiu OR petruiuiu)) OR (petero OR (petr OR peter)))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petruov OR ((peteru OR (petriuiu OR petruiuiu)) OR (petero OR (petr OR peter)))) o.s.*.