Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh sai » dung sai, danh bat, danh dau
ban danh » ban doanh, ban hanh, ban dan
ky tang » ky nang, ky dang, kho tang
van hoi » van hoc, van hoe, van loi
hieu ve » hieu va, hieu van
cau cua » cau qua, ca cua, cu cua
cua te » cua tu
tu sac » tu sach, tu cac, tu san
sac ky » cac ky, sai ky
ve cau » ke cau, va cau, ve cac

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 tang ((van hoi) OR (van hoa)). hieu ve cau cua ban danh sai ((cua te) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sac ky tang ((van hoi) OR (van hoa)). hieu ve cau cua ban danh sai ((cua te) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sac ky tang ((van hoi) OR (van hoa)). hieu ve cau cua ban danh sai ((cua te) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu sac ky tang ((van hoi) OR (van hoa)). hieu ve cau cua ban danh sai ((cua te) or (su triet))*.