Perhaps you should try some spelling variations:
"fop peterov OR petruv OR petruuv OR per OR peterio OR peteru OR petr o.s.*" » "fop peterov OR peteruv OR peteruuv OR per OR peterio OR peteru OR peter o.s.*" (Expand Search), "fop peterov OR petriuv OR petriuuv OR per OR peterio OR peteru OR petri o.s.*" (Expand Search), "fop peterov OR petruuv OR petruuuv OR per OR peterio OR peteru 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 petruuv)) OR (((per OR peterio) OR peteru) OR petr)) o.s.*.