Perhaps you should try some spelling variations:
"medical sociological association" » "medical psychological association", "medical ecological associations", "medical psychological association's", "medico sociological association", "medical biological association", "medical radiological association"
"medical psychological evaluation" » "medical biological evaluation", "medical psychological consultation", "media psychological evaluation", "american psychological evaluation", "medical psychosocial evaluation"
"medical urological association" » "medical ecological associations", "medical archaeological association", "medical psychological association", "medical neurological association", "medical biological association", "medical astrological association"

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: (((("medical sociological association") OR ("medical urological association"))) OR ("medical psychological evaluation")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"medical sociological association\") OR (\"medical urological association\"))) or (\"medical psychological evaluation\"))".
• Removing quotes may allow a broader search: (((( medical sociological association ) OR ( medical urological association ))) or ( medical psychological evaluation )).
• Adding a wildcard symbol may retrieve word variants: (((("medical sociological association") OR ("medical urological association"))) or ("medical psychological evaluation"))*.