Perhaps you should try some spelling variations:
"international non-governmental organisation" » "international union-governmental organisation" (Expand Search), "international a-governmental organisation" (Expand Search), "international day-governmental organisation" (Expand Search)
"international de-governmental organisation" » "internationale des-governmental organisation" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("international non-governmental organisation") OR ("international de-governmental organisation"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"international non-governmental organisation\") OR (\"international de-governmental organisation\"))*".
• Removing quotes may allow a broader search: (( international non-governmental organisation ) OR ( international de-governmental organisation ))*.