Perhaps you should try some spelling variations:
petriiiov » peteriiiov (Expand Search), petruiiiov (Expand Search), petroiiiov (Expand Search)
petriiv » peteriiv (Expand Search), petruiiv (Expand Search), petroiiv (Expand Search)
petruov » peteruov (Expand Search), petruuov (Expand Search), petrouov (Expand Search)
petrv » peterv (Expand Search), petruv (Expand Search), petrov (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 ((((petriiiov OR (petriiv OR petriiv)) OR petruov) OR petrv) OR ((petri OR per) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petriiiov OR (petriiv OR petriiv)) OR petruov) OR petrv) OR ((petri OR per) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petriiiov OR (petriiv OR petriiv)) OR petruov) OR petrv) OR ((petri OR per) OR petr)) o.s.*.