Perhaps you should try some spelling variations:
danh doi » danh di, thanh doi, dung doi
doi cua » dai cua, hoi cua, dong cua
sach ty » sach y, sach thu, xach tay
cua tre » cua te, cuu tre, cua triet
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
sach tu » sach thu, cach tu, sach uu
bac va » ban va, bac ha, bao va
luc va » duc va, tuc va, loc va
va cao » va cac, va co, va dao

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 ty) or (sach tu)) nang xa hoi. hieu va cao ((bac va) or (luc va)) danh doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach tu)) nang xa hoi. hieu va cao ((bac va) OR (luc va)) danh doi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach tu)) nang xa hoi. hieu va cao ((bac va) or (luc va)) danh doi cua tre*.