Perhaps you should try some spelling variations:
pol » pool, poly, pole
polyanion » poolyanion, polyyanion, poleyanion, polyanions, polyanionic
polyyanion » poolyyanion, polyyyanion, poleyyanion, polyanions, polycation, polyanin
hole » home, hope, holy

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 pope) OR ((poolyyyls OR (polyanion OR polyyanion)) OR hole)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((pol or pope) or ((poolyyyls or (polyanion OR polyyanion)) or hole))".
• Adding a wildcard symbol may retrieve word variants: ((pol or pope) or ((poolyyyls or (polyanion OR polyyanion)) or hole))*.