Perhaps you should try some spelling variations:
cua triet » cua viet, su triet
va triet » va thiet, va trien, ve triet
nam thuc » nam thuoc, am thuc, nam thu
danh ban » doanh ban, danh bat, danh bac
xay danh » day danh, vay doanh, xay dung
thuc xay » thuc day, tuc xay, thuat xay
sach ky » sac ky, sach y, sach kem
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
ma hoi » mai hoi, xa hoi, ma hoa
ve nam » he nam, va nam, le nam

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((sach ky) or (sach ty)) nang ma hoi. hieu ve nam thuc xay danh ban ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) nang ma hoi. hieu ve nam thuc xay danh ban ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach ty)) nang ma hoi. hieu ve nam thuc xay danh ban ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach ty)) nang ma hoi. hieu ve nam thuc xay danh ban ((cua triet) OR (va triet))*.