Perhaps you should try some spelling variations:
peteroiv » petrov (Expand Search), peterdi (Expand Search)
petrooiuv » peterooiuv (Expand Search), petriooiuv (Expand Search), petroooiuv (Expand Search)
petroov » peteroov (Expand Search), petrioov (Expand Search), petrooov (Expand Search)
petriuiuv » peteriuiuv (Expand Search), petriiuiuv (Expand Search), petroiuiuv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petr » peter (Expand Search), 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 ((peteroiv OR ((petrooiuv OR petroov) OR petriuiuv)) OR ((petru OR peteriu) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((peteroiv OR ((petrooiuv OR petroov) OR petriuiuv)) OR ((petru OR peteriu) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((peteroiv OR ((petrooiuv OR petroov) OR petriuiuv)) OR ((petru OR peteriu) OR petr)) o.s.*.