Perhaps you should try some spelling variations:
"partial nuclear test a treaty" » "particle nuclear test a treaty", "practical nuclear test a treaty", "tactical nuclear test a treaty", "partial nuclear test _ treaty", "partial nuclear test act treaty"
"particles nuclear test a treaty" » "particles nuclear test _ treaty", "particles nuclear test act treaty"

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: "((\"partial nuclear test a treaty\") OR (\"particles nuclear test a treaty\"))".
• Removing quotes may allow a broader search: (( partial nuclear test a treaty ) OR ( particles nuclear test a treaty )).
• Adding a wildcard symbol may retrieve word variants: (("partial nuclear test a treaty") OR ("particles nuclear test a treaty"))*.