Perhaps you should try some spelling variations:
dan thanh » dang thanh, danh thanh, ban thanh
nham thuc » nhan thuc, nham thu, pham thuc
hieu van » hieu va, thien van, lieu va
nam thuc » nam thuoc, am thuc, nam thu
thanh vi » hanh vi, thanh va, thanh ve
so cach » so sach, co cach, loi cach
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa
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: so cach tu nang ma hoi. hieu van ((nham thuc) OR (nam thuc)) dan thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so cach tu nang ma hoi. hieu van ((nham thuc) OR (nam thuc)) dan thanh vi cua tre".
• Adding a wildcard symbol may retrieve word variants: so cach tu nang ma hoi. hieu van ((nham thuc) OR (nam thuc)) dan thanh vi cua tre*.