Perhaps you should try some spelling variations:
nam thuc » nam thuoc, nam thu, nam tu
xay hanh » day nhanh, day thanh, xanh hanh
hanh tai » thanh tai, hang tai, han tai
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
lieu ha » lieu nha, lieu va, lieu ma
buu tre » cuu tre
ma hoi » mai hoi, xa hoi, ma hoa

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 nang ma hoi. ((lieu ha) or (liem ha)) ((nam thuc) OR (am thuc)) xay hanh tai buu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang ma hoi. ((lieu ha) OR (liem ha)) ((nam thuc) OR (am thuc)) xay hanh tai buu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang ma hoi. ((lieu ha) or (liem ha)) ((nam thuc) OR (am thuc)) xay hanh tai buu tre*".