Perhaps you should try some spelling variations:
kho tang » cao tang
dai hoi » dai hoc, dai hai, dai moi
hieu vu » hieu va, hieu ve, hieu su
vu chat » va chat, ve chat, du chat
vuc van » luc van, thuc van, chuc van
duc van » duc va, duc tan, duc manh
tu sac » tu sach, tu cac, tu san
anh vi » hanh vi, anh va, anh ve
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 ((kho tang) OR (ky nang)) dai hoi. hieu vu chat ((vuc van) OR (duc van)) anh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ((kho tang) or (ky nang)) dai hoi. hieu vu chat ((vuc van) OR (duc van)) anh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: tu sac ((kho tang) or (ky nang)) dai hoi. hieu vu chat ((vuc van) OR (duc van)) anh vi cua te*.