Perhaps you should try some spelling variations:
chat xuc » chat huu, cam xuc, chao xu
dua tren » dung tren
ban hanh » ban hang
cuu tre » cua tre, cau tren, cau treo
va hanh » van hanh, va thanh, va danh
va chat » van chat, va phat, cao chat
hieu va » lieu va, hieu qua
nang ma » tang ma, sang ma, nang cao
sac ky » cac ky, sai ky
ma hoi » mai hoi, xa hoi, ma hoa
tu sac » tu sach, tu cac, tu san

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 va chat xuc ((va hanh) or (ban hanh)) dai ((dua tren) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky nang ma hoi. hieu va chat xuc ((va hanh) OR (ban hanh)) dai ((dua tren) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: tu sac ky nang ma hoi. hieu va chat xuc ((va hanh) or (ban hanh)) dai ((dua tren) or (cuu tre))*.