Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue hang » thu hang, thuy hang, thue thanh
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
nam duoc » nam thuoc, da duoc, dat duoc
duoc ban » duc ban, quoc ban, buoc ban
ban hanh » ban hang
su sach » so sach, vu sach
hang xa » hoang xa, hang va, hang ca
hanh va » hang va, hanh vi
cua tre » cua te, cuu tre, dua tren

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 thue hang xa hoi. hieu van nam duoc ban hanh va ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach thue hang xa hoi. hieu van nam duoc ban hanh va ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: su sach thue hang xa hoi. hieu van nam duoc ban hanh va ((cua tre) or (cua triet))*.