Perhaps you should try some spelling variations:
22radiation injuries » radiation injury, rotation injuries
radiation injuries » radiation injury, radiation induced
friction injuries » frictions inquiries, junction injuries, extraction injuries
friction induces » friction induced, frictional induced, formation induces
2f therapy » 2 therapy, rf therapy, tnf therapy
amputation » imputation, computation, reputation

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: %((((((22radiation injuries) OR (((friction injuries) OR (friction induces))))) OR (amputation injuries))) OR (radiation injuries)) %2f therapy%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((((22radiation injuries) or (((friction injuries) OR (friction induces))))) or (amputation injuries))) or (radiation injuries)) %2f therapy%22".
• Adding a wildcard symbol may retrieve word variants: %((((((22radiation injuries) or (((friction injuries) OR (friction induces))))) or (amputation injuries))) or (radiation injuries)) %2f therapy%22*.