Perhaps you should try some spelling variations:
lang hyoung » wang hyoung, kang young, hwang byoung
using smart » using market
bent when » best when, debt when, text when
when when » when where, wheel when, when women
using smt » using sat, using smc, using soft
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: lang hyoung ((yang jie) OR (yang jui)) bent when when ((using smt) OR (using smart)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang hyoung ((yang jie) or (yang jui)) bent when when ((using smt) OR (using smart)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang hyoung ((yang jie) or (yang jui)) bent when when ((using smt) OR (using smart)) ;*.