Perhaps you should try some spelling variations:
petruiov » petrov (Expand Search)
petriiov » petrov (Expand Search)
petrouv » petrovuv (Expand Search), petruuv (Expand Search), petruv (Expand Search)
petroiiov » petroviiov (Expand Search), petruiiov (Expand Search), petriiov (Expand Search)
petroooui » petrovooui (Expand Search), petruooui (Expand Search), petrooui (Expand Search)
petro » petrov (Expand Search), petru (Expand Search), petr (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "fop ((petrouv OR (petruiov OR (petriiov OR petroiiov))) OR ((petri OR petroooui) OR petro)) o.s.~".
• Adding a wildcard symbol may retrieve word variants: fop ((petrouv OR (petruiov OR (petriiov OR petroiiov))) OR ((petri OR petroooui) OR petro)) o.s.*.