Perhaps you should try some spelling variations:
making sure » making series, making space
dung hoang » dong hoang
chen dung » chen chung, chen rong, chen yang
liang dan » liang tan, king dan, liang sun
yang yi » yang di, yang xi, yang jui
yi chen » jui chen
qian » ian, kian, jian

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: ((qian jun) OR (liang dan)) yang yi chen dung hoang ((making sure) OR (making sense)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((qian jun) or (liang dan)) yang yi chen dung hoang ((making sure) OR (making sense)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((qian jun) or (liang dan)) yang yi chen dung hoang ((making sure) OR (making sense)) ;*.