Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
lam duoc » nam duoc, luat duoc, lam thuoc
thanh vi » hanh vi, thanh va, thanh ve
cau tren » cu tren, dau tren, ca tren
nang ma » tang ma, sang ma, nang cao
lam xuc » cam xuc
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cau » va cau, ve cau, di cau

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 nang ma hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi cau tren~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu van ((lam xuc) OR (lam duoc)) ban thanh vi cau tren.
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi cau tren*.