Perhaps you should try some spelling variations:
grafted polymers » grafted polymer, grafted copolymers, grafted polymeric
about polymers » about polygenes, about polygons, bound polymers
raft polymers » graft polymers, graft copolymers, smart polymers
soft polymers » soft polymer, soft polymeric, host polymers
ucst polymers » ucst polymer, cnt polymers, host 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: ((((((((raft polymers) OR (grafted polymers))) OR (soft polymers))) OR (about polymers))) OR (ucst polymers)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((((raft polymers) OR (grafted polymers))) or (soft polymers))) or (about polymers))) or (ucst polymers))".
• Adding a wildcard symbol may retrieve word variants: ((((((((raft polymers) OR (grafted polymers))) or (soft polymers))) or (about polymers))) or (ucst polymers))*.