Perhaps you should try some spelling variations:
"diseases supplementary services" » "diseases complementary services", "disease complementary services", "issues supplementary services", "diseases supplementary exercises"
"selected supplementary queries" » "required supplementary queries", "selected supplementary exercises", "selected supplementary studies", "selected supplementary materials"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"diseases supplementary services\") OR (\"selected supplementary queries\"))".
• Removing quotes may allow a broader search: (( diseases supplementary services ) OR ( selected supplementary queries )).
• Adding a wildcard symbol may retrieve word variants: (("diseases supplementary services") OR ("selected supplementary queries"))*.