Perhaps you should try some spelling variations:
petroiov » petrov (Expand Search), peteroiov (Expand Search), petrioiov (Expand Search), petruoiov (Expand Search)
peteriiv » peterdi (Expand Search)
petriu » peteriu (Expand Search), petriiu (Expand Search), petruiu (Expand Search)
petriiv » peteriiv (Expand Search), petriiiv (Expand Search), petruiiv (Expand Search)
petriiiv » peteriiiv (Expand Search), petriiiiv (Expand Search), petruiiiv (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 (petroiov OR ((petriu OR ((petriiv OR petriiiv) OR peteriiv)) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop (petroiov OR ((petriu OR ((petriiv OR petriiiv) OR peteriiv)) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop (petroiov OR ((petriu OR ((petriiv OR petriiiv) OR peteriiv)) OR petr)) o.s.*.