Perhaps you should try some spelling variations:
petrviov » petrov (Expand Search), peterviov (Expand Search), petriviov (Expand Search), perviov (Expand Search)
petrovici » petrovvici (Expand Search), petrivici (Expand Search), peterovici (Expand Search), petriovici (Expand Search), perovici (Expand Search)
petro » petrov (Expand Search), petri (Expand Search), petero (Expand Search), petrio (Expand Search), pero (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), peru (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), periu (Expand Search)
petr » peter (Expand Search), petri (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 ((peterov OR (petrovici OR petrviov)) OR ((petru OR petriu) OR (petro OR petr))) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peterov OR (petrovici OR petrviov)) OR ((petru OR petriu) OR (petro OR petr))) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peterov OR (petrovici OR petrviov)) OR ((petru OR petriu) OR (petro OR petr))) o.s.*.