Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
hanh vai » hanh vi, hanh va, hanh tai
tu sach » thu sach, su sach, te sach
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu sau, tieu su, hieu so
cam duc » cam xuc, cao duc, pham duc
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
tu sac » tu san, tu bac, tu lac
su cam » su nam, su cao, su can
cua te » cua tu

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 sach))) or (tu cac)) ky tang dai hoi. hieu su cam duc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((tu sac) OR (tu sach))) OR (tu cac)) ky tang dai hoi. hieu su cam duc va hanh vai cua te.
• Adding a wildcard symbol may retrieve word variants: ((((tu sac) or (tu sach))) or (tu cac)) ky tang dai hoi. hieu su cam duc va hanh vai cua te*.