Perhaps you should try some spelling variations:
"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 any treaty" » "statistical nuclear test any treaty", "clinical nuclear test any treaty", "national nuclear test any treaty", "tactical nuclear test ban treaty", "tactical nuclear test inf treaty", "tactical nuclear test any treatise", "tactical nuclear jest any treaty", "tactical nuclear test anti treaty", "tactical nuclear test act treaty", "tactical nuclear test actny 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 any treaty"))*.
• Removing quotes may allow a broader search: (( practical nuclear test a treaty ) or ( tactical nuclear test any treaty ))*.