Perhaps you should try some spelling variations:
sach tham » sach nha
dang xay » dang van, van xay
sach thu » sach thue, sach thieu, cach thuc
hieu van » hieu va, thien van, lieu va
van anh » van thanh, tuan anh, van minh
xuc van » duc van, luc van, vuc van
nam xuc » cam xuc, nam xua, nam thuc
nang ma » tang ma, sang ma, nang cao
cua tre » cua te, cuu tre, cua triet
anh va » hanh va
va cua » va chua, via cua, ca cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach thu) OR (sach tham)) ((nang ma) or (dang xay)) hoi. hieu van nam xuc van anh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sach tham)) ((nang ma) OR (dang xay)) hoi. hieu van nam xuc van anh va cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sach thu) OR (sach tham)) ((nang ma) or (dang xay)) hoi. hieu van nam xuc van anh va cua tre*".