Perhaps you should try some spelling variations:
"partial nuclear test bed treaty" » "particle nuclear test bed treaty", "particles nuclear test bed treaty", "practical nuclear test bed treaty", "partial nuclear test ban treaty", "partial nuclear test ec treaty", "partial nuclear test b treaty"
"partial nuclear test new treaty" » "particle nuclear test new treaty", "particles nuclear test new treaty", "practical nuclear test new treaty", "partial nuclear test new threats", "partial nuclear test new threat", "partial nuclear test new treatise", "partial nuclear best new treaty", "partial nuclear west new treaty", "partial nuclear last new 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 bed treaty\") OR (\"partial nuclear test new treaty\"))".
• Removing quotes may allow a broader search: (( partial nuclear test bed treaty ) OR ( partial nuclear test new treaty )).
• Adding a wildcard symbol may retrieve word variants: (("partial nuclear test bed treaty") OR ("partial nuclear test new treaty"))*.