Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
thanh vi » hanh vi, thanh va, thanh ve
ky tang » ky nang, ky dang, kho tang
dai hoi » dai hoc, dai hai, dai moi
hieu su » hieu sau, tieu su, hieu so
su chat » su phat, du chat, so chat
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
tu sac » tu sach, tu san, tu bac
xuc va » duc va, tuc va, xac va
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 cac)) ky tang dai hoi. hieu su chat ((xuc va) OR (luc va)) thanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sac) OR (tu cac)) ky tang dai hoi. hieu su chat ((xuc va) OR (luc va)) thanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu cac)) ky tang dai hoi. hieu su chat ((xuc va) OR (luc va)) thanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu cac)) ky tang dai hoi. hieu su chat ((xuc va) OR (luc va)) thanh vi cua te*.