Perhaps you should try some spelling variations:
peteruov » petrov (Expand Search)
petriiv » peteriiv (Expand Search), petruiiv (Expand Search), petroiiv (Expand Search)
petruuiov » peteruuiov (Expand Search), petruuuiov (Expand Search), petrouuiov (Expand Search)
petruuiuiov » peteruuiuiov (Expand Search), petruuuiuiov (Expand Search), petrouuiuiov (Expand Search)
petri » peteri (Expand Search), petrui (Expand Search), petroi (Expand Search)
petr » peter (Expand Search), petru (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 ((((petriiv OR peteriv) OR (petruuiov OR petruuiuiov)) OR peteruov) OR (petri OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriiv OR peteriv) OR (petruuiov OR petruuiuiov)) OR peteruov) OR (petri OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriiv OR peteriv) OR (petruuiov OR petruuiuiov)) OR peteruov) OR (petri OR petr)) o.s.*.