Perhaps you should try some spelling variations:
so sach » so sanh, bo sach, co sach
xanh di » vanh dai, xanh tai
danh di » danh du, danh dien, danh gia
cac thu » cach thuc, cac thoi
nang xa » nang x, lang xa, mang xa
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
thu va » thuc va, thue va, tu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach y ((nang xa) or (nang ma)) hoi. lieu va cac thu va ((danh di) or (xanh di)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y ((nang xa) OR (nang ma)) hoi. lieu va cac thu va ((danh di) OR (xanh di)) cua tre.
• Adding a wildcard symbol may retrieve word variants: so sach y ((nang xa) or (nang ma)) hoi. lieu va cac thu va ((danh di) or (xanh di)) cua tre*.