Perhaps you should try some spelling variations:
"continuous hypothesis" » "continuum hypothesis", "continuous hyperthermic", "continuous anesthesia"
"continuity hypothesis" » "continuum hypothesis", "contact hypothesis", "utility hypothesis"
"continuum hypotheses" » "continuum hypothesis", "kontinuum hypothese", "continuum synthesis"
"continuous synthesis" » "continuum synthesis", "discontinuous synthesis", "continents synthesis"

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