Perhaps you should try some spelling variations:
tang dai » tang tai, tang dan, lang dai
ky tang » ky nang, ky dang, kho tang
hieu vu » hieu va, hieu ve, hieu su
vu chao » vu cao, vu cham, vu chat
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
xu van » tu van, su van
vu van » tu van
vi cua » vai cua, di cua
cua te » cua tu

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: tu sac ky tang dai hoc. hieu vu chao ((xu van) OR (vu van)) hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang dai hoc. hieu vu chao ((xu van) or (vu van)) hanh vi cua te*.