Perhaps you should try some spelling variations:
nham thuc » nhan thuc, nham thu, pham thuc
phap thuc » phap thu, phap hoc, phap tu
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
va thanh » gia thanh, ban thanh, va tinh
thanh ve » hanh ve, thanh va, thanh vien
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
tu sai » tu bai, tu san, tu cai
sai ky » sac ky
ma hoi » mai hoi, xa hoi, ma hoa
ve cuu » ve cau, ve chu, ve cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sai ky nang ma hoi. hieu van ((nam thuc) or (((phap thuc) or (nham thuc)))) va thanh ve cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sai ky nang ma hoi. hieu van ((nam thuc) OR (((phap thuc) OR (nham thuc)))) va thanh ve cuu tre.
• Adding a wildcard symbol may retrieve word variants: tu sai ky nang ma hoi. hieu van ((nam thuc) or (((phap thuc) or (nham thuc)))) va thanh ve cuu tre*.