Perhaps you should try some spelling variations:
tang lai » trang lai, tang tai, tang loi
van hanh » van thanh, ban hanh, van anh
ky tang » ky nang, ky dang, kho tang
lai roi » lai hoi, loi roi
hieu vu » hieu va, hieu ve, hieu su
vu chao » vu cao, vu cham, vu chat
va hanh » va thanh, va danh, ban hanh
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
vi cua » vai cua, di cua
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 ky tang lai roi. hieu vu chao xu ((va hanh) or (van hanh)) vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang lai roi. hieu vu chao xu ((va hanh) OR (van hanh)) vi cua te.
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang lai roi. hieu vu chao xu ((va hanh) or (van hanh)) vi cua te*.