Perhaps you should try some spelling variations:
nutritional supplement » nutritional supplements, nutritional improvement, nutritional support
occasional supplement » educational supplement, occasional punishment, occasional retirement
additional supplement » additional settlement, educational supplement, additional supplies

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: some ((occasional supplement) OR (((additional supplement) OR (nutritional supplement)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "some ((occasional supplement) or (((additional supplement) OR (nutritional supplement))))".
• Adding a wildcard symbol may retrieve word variants: some ((occasional supplement) or (((additional supplement) OR (nutritional supplement))))*.