Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
qua cam » qua cham, qua cac, qua ca
cam luc » cam xuc, cau luc
va tinh » may tinh
tinh vi » trinh vi, tinh voi, tinh va
tu sac » tu sach, tu san, tu bac
luc va » duc va, tuc va, loc va
cua te » cua tu
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sac) or (tu cac)) ky tang dai hoi. hieu qua cam luc va tinh vi ((cua te) or (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky tang dai hoi. hieu qua cam luc va tinh vi ((cua te) OR (cua su)).
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky tang dai hoi. hieu qua cam luc va tinh vi ((cua te) or (cua su))*.