Perhaps you should try some spelling variations:
"fop peterov OR petruv OR petriv OR petruv OR petriuv OR petriuo OR petr o.s.*" » "fop peterov OR peteruv OR peteriv OR peteruv OR peteriuv OR peteriuo OR peter o.s.*" (Expand Search), "fop peterov OR petriuv OR petriiv OR petriuv OR petriiuv OR petriiuo OR petri o.s.*" (Expand Search), "fop peterov OR petruuv OR petruiv OR petruuv OR petruiuv OR petruiuo OR petru o.s.*" (Expand Search)

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

• Removing quotes may allow a broader search: fop ((peterov OR ((petruv OR petriv) OR (petruv OR petriuv))) OR (petriuo OR petr)) o.s.*.