Perhaps you should try some spelling variations:
where using » were using, when using
kang young » wang hyoung
bent when » debt when, text when, benefit when
best when » best what, debt when, text when
using smt » using sat, using smc, using smart
yang jie » yang jin, yang di, yang xi
yang jui » yang judy, yang di, yang xi

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: kang young ((yang jie) OR (yang jui)) ((bent when) OR (best when)) where using smt ;~.
• Adding a wildcard symbol may retrieve word variants: kang young ((yang jie) or (yang jui)) ((bent when) or (best when)) where using smt ;*.