Perhaps you should try some spelling variations:
sach thuat » sach tham, dich thuat, cac thuat
thuat nang » thuat bang, thuat mang, thuat trang
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
nam xua » nam cua, nam mua, nam qua
xua ban » xuat ban, cua ban, qua ban
ban ban » ban banh, van ban, can ban
cua tre » cuu tre, cua triet, dua tren
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thuat nang xa hoi. hieu van nam xua ban ban va ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thuat nang xa hoi. hieu van nam xua ban ban va ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc sach thuat nang xa hoi. hieu van nam xua ban ban va ((cua tre) or (cua te))*.