Perhaps you should try some spelling variations:
"supporting ndc international seminar." » "supporting ndc international series.", "supporting ndc international standard.", "supporting ndc international mining.", "supporting etc international seminar.", "supporting tec international seminar.", "supporting apec international seminar.", "supporting new international seminar.", "supporting dmdu international seminar.", "supporting each international seminar."
"support trade integration theories." » "support trade integration theorems.", "support trade integrationstheorie 2.", "support trade integration theory.", "support trainer integration theories.", "export trade integration theories.", "import trade integration theories."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support trade integration theories.") or ("supporting ndc international seminar."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support trade integration theories.") OR ("supporting ndc international seminar.")).
• Removing quotes may allow a broader search: (( support trade integration theories. ) or ( supporting ndc international seminar. )).
• Adding a wildcard symbol may retrieve word variants: (("support trade integration theories.") or ("supporting ndc international seminar."))*.