Perhaps you should try some spelling variations:
about polygenes » about polygons, about politeness, about polymers
bound polymers » bound polymer, bound polysomes, based polymers
cnt polymers » cnt polymer, ucst polymers, plant polymers

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: ((((about polygenes) OR (bound polymers))) OR (cnt polymers)).
• Adding a wildcard symbol may retrieve word variants: ((((about polygenes) or (bound polymers))) or (cnt polymers))*.