Perhaps you should try some spelling variations:
danh vai » danh sai, danh va, doanh van
cac thuc » cach thuc, cac thu, can thuc
hieu van » hieu va, thien van, lieu va
su sach » so sach, vu sach
vai cua » dai cua, hai cua, lai cua
va danh » va dinh, va dan, va hanh
thuc va » thuc vat, thuc dan, thuc day
van cac » van hac, van cau, van bac
lang xa » lang ha, dang xay, lang van
so sanh » do sanh
nang xa » nang x, nang ma, mang xa
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) or (so sanh)) y ((nang xa) OR (lang xa)) hoi. hieu van cac thuc va danh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sanh)) y ((nang xa) OR (lang xa)) hoi. hieu van cac thuc va danh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (so sanh)) y ((nang xa) OR (lang xa)) hoi. hieu van cac thuc va danh vai cua tre*".