Perhaps you should try some spelling variations:
practical nuclear » tactical nuclear, practice nuclear, fractional nuclear
practical nucleic » practical nurses, tactical nuclear, practical nurse
practice nucleic » practice nuclear, active nucleic, precise nucleic
test ban » west bank

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) OR (((practice nucleic) OR (practical nucleic)))) ((test ban) OR (test bed)) treaty.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((practical nuclear) or (((practice nucleic) OR (practical nucleic)))) ((test ban) or (test bed)) treaty".
• Adding a wildcard symbol may retrieve word variants: ((practical nuclear) or (((practice nucleic) OR (practical nucleic)))) ((test ban) or (test bed)) treaty*.