Perhaps you should try some spelling variations:
thu sac » thu sach, thu san, thu dac
thu xac » thau xay
nang ma » tang ma, sang ma, nang cao
dan cac » dan cach, dang cac, dan ca
van cau » van dau, van hau, van chat
va hanh » van hanh, va thanh, va danh
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: ((thu sac) OR (thu xac)) ky nang ma hoi. hieu ((dan cac) or (van cau)) dat va hanh vi cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sac) OR (thu xac)) ky nang ma hoi. hieu ((dan cac) OR (van cau)) dat va hanh vi cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sac) OR (thu xac)) ky nang ma hoi. hieu ((dan cac) or (van cau)) dat va hanh vi cua vat".
• Adding a wildcard symbol may retrieve word variants: ((thu sac) OR (thu xac)) ky nang ma hoi. hieu ((dan cac) or (van cau)) dat va hanh vi cua vat*.