Perhaps you should try some spelling variations:
era housing » a housing, rural housing, core housing
yang davis » wang david, yang dali
test using » tests using, tested using, testing using
yang yang » wang yang, wang yan
bank long » bank loans, bank loan, bank bond
long span » long han
wang » wing, wan

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: (wang OR lang) yang yang davis ((era housing) OR (test using)) bank long span ;~.
• Adding a wildcard symbol may retrieve word variants: (wang or lang) yang yang davis ((era housing) or (test using)) bank long span ;*.