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

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