Perhaps you should try some spelling variations:
petriv » petri (Expand Search), petrov (Expand Search), petriiv (Expand Search), petroiv (Expand Search), periv (Expand Search)
petris » petri (Expand Search), petriis (Expand Search), petrois (Expand Search), peris (Expand Search)
petrouv » petrov (Expand Search), petriouv (Expand Search), petroouv (Expand Search), perouv (Expand Search)
petru » petri (Expand Search), petriu (Expand Search), petrou (Expand Search), peru (Expand Search)
petriiiuv » petriiiiuv (Expand Search), petroiiiuv (Expand Search), periiiuv (Expand Search)
petr » petri (Expand Search), petro (Expand Search), per (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 ((((petriv OR petris) OR petriiiuv) OR petrouv) OR ((pentru OR petru) OR (petr OR peter))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriv OR petris) OR petriiiuv) OR petrouv) OR ((pentru OR petru) OR (petr OR peter))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriv OR petris) OR petriiiuv) OR petrouv) OR ((pentru OR petru) OR (petr OR peter))) o.s.*.