Perhaps you should try some spelling variations:
"fop petrov OR petriou OR petruou OR petruuou OR peteruuou OR peteriu OR petr o.s.*" » "fop peterov OR peteriou OR peteruou OR peteruuou OR peteruuou OR peteriu OR peter o.s.*" (Expand Search), "fop petriov OR petriiou OR petriuou OR petriuuou OR peteruuou OR peteriu OR petri o.s.*" (Expand Search), "fop petruov OR petruiou OR petruuou OR petruuuou OR peteruuou OR peteriu 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 (petrov OR (((petriou OR (petruou OR (petruuou OR peteruuou))) OR peteriu) OR petr)) o.s.*.