Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cau treo » cau theo, cau tren, cau triet
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
lam duoc » nam duoc, luat duoc, lam thuoc
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren
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

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 ((cuu tre) OR (cau treo))~.
• 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 ((cuu tre) OR (cau treo)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky nang ma hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi ((cuu tre) OR (cau treo))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu van ((lam xuc) or (lam duoc)) ban thanh vi ((cuu tre) OR (cau treo))*.