Perhaps you should try some spelling variations:
"constrained hypothesis" » "constraint hypothesis", "constrained synthesis", "constraint hypotheses"
"continuous hypothesis" » "continuity hypothesis", "continuous synthesis", "continuum hypotheses"
"continued hypothesis" » "continuity hypothesis", "continuum hypotheses", "constituency hypothesis"
"continuum hypothesis" » "continue hypothesis", "continues hypothesis"

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: (((("continuum hypothesis") OR ("continuous hypothesis"))) OR ((("continued hypothesis") OR ("constrained hypothesis")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"continuum hypothesis\") or (\"continuous hypothesis\"))) or (((\"continued hypothesis\") OR (\"constrained hypothesis\"))))".
• Removing quotes may allow a broader search: (((( continuum hypothesis ) or ( continuous hypothesis ))) or ((( continued hypothesis ) OR ( constrained hypothesis )))).
• Adding a wildcard symbol may retrieve word variants: (((("continuum hypothesis") or ("continuous hypothesis"))) or ((("continued hypothesis") OR ("constrained hypothesis"))))*.