Perhaps you should try some spelling variations:
"fop petruv OR petrui OR peterov OR petriuiv OR petrov OR petriiv OR petr o.s.*" » "fop peteruv OR peterui OR peterov OR peteriuiv OR peterov OR peteriiv OR peter o.s.*" (Expand Search), "fop petriuv OR petriui OR peterov OR petriiuiv OR petriov OR petriiiv OR petri o.s.*" (Expand Search), "fop petruuv OR petruui OR peterov OR petruiuiv OR petruov OR petruiiv 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 ((petrui OR (peterov OR ((petriuiv OR petrov) OR petriiv))) OR petr)) o.s.*.