Perhaps you should try some spelling variations:
petriuov » petrov (Expand Search), peteriuov (Expand Search), petriiuov (Expand Search), petroiuov (Expand Search)
petriuiv » peteriuiv (Expand Search), petriiuiv (Expand Search), petroiuiv (Expand Search)
petruiuiv » peteruiuiv (Expand Search), petriuiuiv (Expand Search), petrouiuiv (Expand Search)
petru » peteru (Expand Search), petriu (Expand Search), petrou (Expand Search)
petruuo » peteruuo (Expand Search), petriuuo (Expand Search), petrouuo (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 ((petriuiv OR petruiuiv) OR ((((petru OR peteru) OR petruuo) OR petriuov) OR petr)) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petriuiv OR petruiuiv) OR ((((petru OR peteru) OR petruuo) OR petriuov) OR petr)) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((petriuiv OR petruiuiv) OR ((((petru OR peteru) OR petruuo) OR petriuov) OR petr)) o.s.*.