Perhaps you should try some spelling variations:
sach thu » sach thue, sach thieu, sach tham
dang van » hoang van, hang va
danh sai » dung sai, danh bat, danh dau
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam

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 (sac ky)) nang xa hoi. hieu ve cam duc va ((dang van) or (danh sai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach thu) OR (sac ky)) nang xa hoi. hieu ve cam duc va ((dang van) OR (danh sai)) cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach thu) or (sac ky)) nang xa hoi. hieu ve cam duc va ((dang van) or (danh sai)) cua tre*.