Perhaps you should try some spelling variations:
22radiation injuries » radiation injury, friction injuries, rotation injuries
imputation injuries » amputation injuries, imputation indexes, luxation injuries
radiation injuries » radiation injury, radiation induced
2f therapy » 2 therapy, rf therapy, tnf therapy

Try widening your search to All Fields.

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 (imputation injuries))) OR (radiation injuries)) %2f therapy%22.
• Adding a wildcard symbol may retrieve word variants: %((((22radiation injuries) or (imputation injuries))) or (radiation injuries)) %2f therapy%22*.