Perhaps you should try some spelling variations:
"continuous hypothesis" » "continuity hypothesis", "continuous synthesis", "continuum hypotheses"
"contact hypothesis" » "continuity hypothesis"
"continuum hypothesis" » "continued 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: (("continuous hypothesis") OR ((("continuum hypothesis") OR ("contact hypothesis")))).
• Removing quotes may allow a broader search: (( continuous hypothesis ) or ((( continuum hypothesis ) or ( contact hypothesis )))).
• Adding a wildcard symbol may retrieve word variants: (("continuous hypothesis") or ((("continuum hypothesis") or ("contact hypothesis"))))*.