Perhaps you should try some spelling variations:
test housing » cost housing, era housing, tested using
test using » tests using, tested using, testing using
wang yong » wang yang, wang hyoung, wang yan
yong yang » yang yang, dong yang, ying yang
bank kong » bank long, bank bond
kong sara » kong sar
yang api » yang dali, yang di, yang jui

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang yong yang api ((test housing) OR (test using)) bank kong sara ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yong yang api ((test housing) OR (test using)) bank kong sara ;".
• Adding a wildcard symbol may retrieve word variants: wang yong yang api ((test housing) OR (test using)) bank kong sara ;*.