Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
nang ma » tang ma, sang ma, nang cao
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va hanh » van hanh, va thanh, va danh
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ma hoi. thien ((van cac) or (van bac)) xuc ((va hanh) or (ban thanh)) vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ma hoi. thien ((van cac) OR (van bac)) xuc ((va hanh) OR (ban thanh)) vi cua vat.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. thien ((van cac) or (van bac)) xuc ((va hanh) or (ban thanh)) vi cua vat*.