Perhaps you should try some spelling variations:
hanh thai » nhanh thai, hinh thai, hanh tai
kho tang » cao tang
te sach » toc sach
cua tre » cua te, cua triet, dua tren
va hanh » van hanh, va thanh, va danh
cuu tre » cau tren, cau treo
hieu va » lieu va, hieu qua
tang xa » trang xa, tang ma, lang xa
cam tu » cam thu, nam tu, dam tu
te san » te ban, ke san, tu san
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (te san)) kho tang xa hoi. hieu va cam tu va hanh thai ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (te san)) kho tang xa hoi. hieu va cam tu va hanh thai ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (te san)) kho tang xa hoi. hieu va cam tu va hanh thai ((cua tre) or (cuu tre))*.