Perhaps you should try some spelling variations:
pol » poly, pole, poll
poleis » polyeis, poleeis, polleis, polens, paleis, polemics
apollonios » apolylonios, apolelonios, apolllonios, apollonius, apollonio, apolloni
vooris » voorhis, voors, voorhies

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: ((pol OR (pool OR poor)) OR ((vooris OR poleis) OR apollonios))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pol or (pool OR poor)) or ((vooris or poleis) or apollonios))*".