Perhaps you should try some spelling variations:
"statistical nuclear test a treaty" » "statistical linear test a treaty", "statistical numeracy test a treaty", "statistical nuclear test _ treaty", "statistical nuclear test act treaty"
"practical nuclear test a treaty" » "practical nucleic test a treaty", "practice nuclear test a treaty", "fractional nuclear test a treaty", "practical nuclear test _ treaty", "practical nuclear test act treaty"
"tactical nuclear test a treaty" » "clinical nuclear test a treaty", "national nuclear test a treaty", "arctic nuclear test a treaty", "tactical nuclear test _ treaty", "tactical nuclear test act treaty"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("practical nuclear test a treaty") OR ((("tactical nuclear test a treaty") OR ("statistical nuclear test a treaty")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"practical nuclear test a treaty\") or (((\"tactical nuclear test a treaty\") OR (\"statistical nuclear test a treaty\"))))".
• Removing quotes may allow a broader search: (( practical nuclear test a treaty ) or ((( tactical nuclear test a treaty ) OR ( statistical nuclear test a treaty )))).
• Adding a wildcard symbol may retrieve word variants: (("practical nuclear test a treaty") or ((("tactical nuclear test a treaty") OR ("statistical nuclear test a treaty"))))*.