Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petruiuov (Expand Search)
petriiiouv » peteriiiouv (Expand Search), petriiiiouv (Expand Search), petruiiiouv (Expand Search)
petruiiiouv » peteruiiiouv (Expand Search), petriuiiiouv (Expand Search), petruuiiiouv (Expand Search)
petriuou » peteriuou (Expand Search), petriiuou (Expand Search), petruiuou (Expand Search)
petriuuou » peteriuuou (Expand Search), petriiuuou (Expand Search), petruiuuou (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 ((petriuov OR (petriiiouv OR petruiiiouv)) OR ((petriuou OR petriuuou) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuov OR (petriiiouv OR petruiiiouv)) OR ((petriuou OR petriuuou) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriuov OR (petriiiouv OR petruiiiouv)) OR ((petriuou OR petriuuou) OR petr)) o.s.*.