Perhaps you should try some spelling variations:
petriuv » peteriuv (Expand Search), petriiuv (Expand Search), petruiuv (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petroiu » peteroiu (Expand Search), petrioiu (Expand Search), petruoiu (Expand Search)
petruoiu » peteruoiu (Expand Search), petriuoiu (Expand Search), petruuoiu (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (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 (petriuv OR ((peteru OR (petriu OR (petroiu OR petruoiu))) OR (petruv OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriuv OR ((peteru OR (petriu OR (petroiu OR petruoiu))) OR (petruv OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petriuv OR ((peteru OR (petriu OR (petroiu OR petruoiu))) OR (petruv OR petr))) o.s.*.