Perhaps you should try some spelling variations:
heater supply » water supply, center supply, gesamter supply
better supply » better supplying, better support, between supply
known heater » known better, known chapter, known related
heat supply » smart supply
down better » known better, domain better, down western
known heat » known heart, known health, known here

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: (((( known heat supply ) OR ( down better supply ))) OR ( known heater supply )).
• Adding a wildcard symbol may retrieve word variants: (((( known heat supply ) or ( down better supply ))) or ( known heater supply ))*.