Perhaps you should try some spelling variations:
"levant supplementary services" » "relevant supplementary services", "levant supplement services", "levant complementary services"
"selected supplementary queries" » "selected supplement queries", "selected complementary queries"

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: "((\"levant supplementary services\") OR (\"selected supplementary queries\"))".
• Removing quotes may allow a broader search: (( levant supplementary services ) OR ( selected supplementary queries )).
• Adding a wildcard symbol may retrieve word variants: (("levant supplementary services") OR ("selected supplementary queries"))*.