Perhaps you should try some spelling variations:
22radiation injuries » radiation injury, friction injuries
radiation injuries » radiation injury, radiation induced
luxation injuries » junction injuries, amputation injuries, friction injuries
rotation injuries » motion injuries, amputation injuries, extraction injuries
tnf therapy » vegf therapy
rf therapy » brief therapy, grief therapy, vegf therapy
2 therapy » 2 therapie

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