Perhaps you should try some spelling variations:
"continuous hypothesis" » "continuum hypothesis", "continuity hypothesis", "continuum hypotheses"
"continuous synthesis" » "continuum synthesis", "discontinuous synthesis", "continents synthesis"
"kontinuum hypothese" » "continuum hypothesis", "die kontinuumshypothese"

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 ("kontinuum hypothese"))) OR ("continuous synthesis")).
• Removing quotes may allow a broader search: (((( continuous hypothesis ) or ( kontinuum hypothese ))) or ( continuous synthesis )).
• Adding a wildcard symbol may retrieve word variants: (((("continuous hypothesis") or ("kontinuum hypothese"))) or ("continuous synthesis"))*.