Perhaps you should try some spelling variations:
"national army studies association" » "national army services associations" (Expand Search), "national parks studies association" (Expand Search), "national day studies association" (Expand Search), "national park studies association" (Expand Search), "national area studies association" (Expand Search), "national from studies association" (Expand Search)
"national urban studies association" » "national urban services associations" (Expand Search), "national burden studies association" (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: (("national army studies association") OR ("national urban studies association"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"national army studies association\") OR (\"national urban studies association\"))".
• Removing quotes may allow a broader search: (( national army studies association ) OR ( national urban studies association )).
• Adding a wildcard symbol may retrieve word variants: (("national army studies association") OR ("national urban studies association"))*.