Perhaps you should try some spelling variations:
petruiov » petrov (Expand Search), peteruiov (Expand Search), petriuiov (Expand Search), petruuiov (Expand Search)
petriiov » petrov (Expand Search), peteriiov (Expand Search), petriiiov (Expand Search), petruiiov (Expand Search)
peteruov » petrov (Expand Search)
petriuuov » peteriuuov (Expand Search), petriiuuov (Expand Search), petruiuuov (Expand Search)
petruv » peteruv (Expand Search), petriuv (Expand Search), petruuv (Expand Search)
petriuuv » peteriuuv (Expand Search), petriiuuv (Expand Search), petruiuuv (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 ((((petruiov OR petriiov) OR (peteruov OR petriuuov)) OR (petruv OR petriuuv)) OR petr) o.s.~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((((petruiov OR petriiov) OR (peteruov OR petriuuov)) OR (petruv OR petriuuv)) OR petr) o.s.".
• Adding a wildcard symbol may retrieve word variants: fop ((((petruiov OR petriiov) OR (peteruov OR petriuuov)) OR (petruv OR petriuuv)) OR petr) o.s.*.