Perhaps you should try some spelling variations:
knowing about » known about, know about, knowing your
ying knowing » seeing knowing
thanh daem » thanh dam
guang ying » huang ying, huang jing, huang ting
than daem » than data, than days, than deep
han wei » zhan wei, ha wei, han fei
yu wei » yun wei, lu wei, du wei

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

• Performing a fuzzy search may retrieve terms with similar spellings: (binh or minh) ((thanh daem) OR (than daem)) ((yu wei) or (han wei)) guang ying knowing about ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (binh OR minh) ((thanh daem) OR (than daem)) ((yu wei) OR (han wei)) guang ying knowing about ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(binh or minh) ((thanh daem) OR (than daem)) ((yu wei) or (han wei)) guang ying knowing about ;*".