Perhaps you should try some spelling variations:
lang van » dang van, tang van, hoang van
nam thuc » nam thuoc, am thuc, nam thu
cua tre » cua te, cuu tre, cua triet
nam xua » nam cua, nam mua, nam qua
dinh vi » dinh ve, dinh viet, dinh tri
van hoi » van hoa, van hoc, van hoe
hieu va » lieu va, hieu qua
va dinh » van dinh, va kinh, va tinh
vi cua » vai cua, di cua
ban ky » van ky, dan ky
bai ky » sai ky, bac ky, dai ky

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

• Performing a fuzzy search may retrieve terms with similar spellings: te ((bai ky) or (ban ky)) lang van hoi. hieu va ((nam thuc) or (nam xua)) va dinh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((bai ky) OR (ban ky)) lang van hoi. hieu va ((nam thuc) OR (nam xua)) va dinh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((bai ky) or (ban ky)) lang van hoi. hieu va ((nam thuc) or (nam xua)) va dinh vi cua tre*.