Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
dang xay » dang van, van xay
su sach » so sach, vu sach
voi cua » hoi cua, doi cua, moi cua
dao voi » da voi, dao noi, do voi
hieu va » hieu qua
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
cam tu » cam thu, nam tu, dam tu
va dao » ca dao

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 thu ((nang xa) or (dang xay)) hoi. ((hieu va) or (lieu va)) cam tu va dao voi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thu ((nang xa) OR (dang xay)) hoi. ((hieu va) OR (lieu va)) cam tu va dao voi cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach thu ((nang xa) or (dang xay)) hoi. ((hieu va) or (lieu va)) cam tu va dao voi cua tre*.