Perhaps you should try some spelling variations:
"fop petruv OR petriuv OR petro OR petrui OR per OR peterov OR petriov OR petr o.s.*" » "fop petruv OR petriuv OR petrov OR petrui OR per OR peterov OR petriov OR petr o.s.*" (Expand Search), "fop petruv OR petriuv OR petri OR petrui OR per OR peterov OR petriov OR petr o.s.*" (Expand Search), "fop petruv OR petriuv OR petru OR petrui OR per OR peterov OR petriov OR petr o.s.*" (Expand Search), "fop peteruv OR peteriuv OR petero OR peterui OR per OR peterov OR peteriov OR peter o.s.*" (Expand Search), "fop petriuv OR petriiuv OR petrio OR petriui OR per OR peterov OR petriiov OR petri o.s.*" (Expand Search), "fop petruuv OR petruiuv OR petruo OR petruui OR per OR peterov OR petruiov 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 ((petruv OR petriuv) OR (((petro OR (petrui OR per)) OR (peterov OR petriov)) OR petr)) o.s.*.