Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
danh vai » danh sai, danh va, doanh van
ban danh » ban doanh, ban hanh, ban dan
tang van » dang van, hoang van, trong van
cua tre » cua te, cuu tre, cua triet
cau cua » cau qua, ca cua, cu cua
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
sac ky » cac 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) OR (sai ky)) tang van hoi. hieu ve cau cua ban danh vai ((cua tre) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) tang van hoi. hieu ve cau cua ban danh vai ((cua tre) OR (su triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) tang van hoi. hieu ve cau cua ban danh vai ((cua tre) or (su triet))".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (sai ky)) tang van hoi. hieu ve cau cua ban danh vai ((cua tre) or (su triet))*.