Perhaps you should try some spelling variations:
knowing about » known about, know about, knowing your
lab knowing » a knowing, l knowing, care knowing
han chang » huang chang, than change, can change
wing yan » wang yan, wing ian, wing tan
kong lab » kong land, kong sar, kong yam
dean e » dean _, dean a, dean w
e kong » w kong

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: ((wing yan) OR (han chang)) yang dean e kong lab knowing about ;~.
• Adding a wildcard symbol may retrieve word variants: ((wing yan) or (han chang)) yang dean e kong lab knowing about ;*.