Perhaps you should try some spelling variations:
tested using » test using, tests using, testing using
era housing » a housing, rural housing, core housing
yang dali » yang di, bang dai, yang all
yan yang » yang yang, yao yang, dan yang
nan kong » tan kong
kong eiu » tonga eiu
wai yan » wang yan, wei yang

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: wai yan yang dali ((era housing) OR (tested using)) nan kong eiu ;~.
• Adding a wildcard symbol may retrieve word variants: wai yan yang dali ((era housing) or (tested using)) nan kong eiu ;*.