Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dan thanh » dang thanh, danh thanh, ban thanh
tham thuc » nham thuc, pham thuc, tam thuc
thanh vi » hanh vi, thanh va, thanh ve
thuc dan » thuc hanh, hoc dan, thuc vat
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
hieu va » lieu va
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
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 ky) or (sach ty)) nang ma hoi. ((hieu va) or (hieu qua)) tham thuc dan thanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sac ky) OR (sach ty)) nang ma hoi. ((hieu va) OR (hieu qua)) tham thuc dan thanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: thu ((sac ky) or (sach ty)) nang ma hoi. ((hieu va) or (hieu qua)) tham thuc dan thanh vi cua triet*.