Perhaps you should try some spelling variations:
petru » pentru (Expand Search), petri (Expand Search), petriu (Expand Search), petrou (Expand Search)
petruov » pentruov (Expand Search), petriov (Expand Search), petrov (Expand Search), petriuov (Expand Search), petrouov (Expand Search)
petrou » petro (Expand Search), petrov (Expand Search), petrow (Expand Search), petriou (Expand Search), petroou (Expand Search)
peters » petersen (Expand Search)
petriuv » petriiuv (Expand Search), petroiuv (Expand Search)
petr » petri (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 (petriuv OR ((((petru OR petrou) OR petruov) OR peters) OR ((petr OR per) OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petriuv OR ((((petru OR petrou) OR petruov) OR peters) OR ((petr OR per) OR peter))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petriuv OR ((((petru OR petrou) OR petruov) OR peters) OR ((petr OR per) OR peter))) o.s.*.