Perhaps you should try some spelling variations:
poleis » polens, paleis, polemics, pooleis, polyeis, poleeis
pol » pool, poly, pole
poles » pooles, polyes, polees, roles, holes, pole
poolen » pooled, poole, woolen
poses » pose, posed

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((poleis OR pol) OR ((woollen OR poolen) OR post)) OR (poles OR poses)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((poleis or pol) or ((woollen or poolen) or post)) or (poles OR poses))".
• Adding a wildcard symbol may retrieve word variants: (((poleis or pol) or ((woollen or poolen) or post)) or (poles OR poses))*.