Perhaps you should try some spelling variations:
lam thuc » lam thuoc, am thuc, nam thuc
van hanh » van thanh, ban hanh, van ban
kho tang » cao tang
hieu van » hieu va, thien van, lieu va
tu cach » tu cac
van anh » van thanh, tuan anh, van minh
van lam » van nam
tang xa » trang xa, tang ma, lang xa
su sach » so sach, vu sach
cua tre » cua te, cuu tre, cua triet
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: ((tu cach) or (su sach)) kho tang xa hoi. hieu van lam thuc ((van hanh) or (van anh)) vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) kho tang xa hoi. hieu van lam thuc ((van hanh) OR (van anh)) vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) kho tang xa hoi. hieu van lam thuc ((van hanh) or (van anh)) vi cua tre*.