Perhaps you should try some spelling variations:
thanh dieu » thanh lieu, than dieu, hanh dieu
sach thuc » cach thuc, sach thu, sach thue
toc sach » hoc sach, doc sach, thuoc sach
hanh xa » hanh va, hanh ma, hanh xu
hieu va » lieu va, hieu qua
va chao » va cao, va chat, va cham
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
xu van » tu van, vu van
su van » tu van, vu van

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 thuc hanh xa hoi. hieu va chao ((xu van) or (su van)) thanh dieu ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach thuc hanh xa hoi. hieu va chao ((xu van) OR (su van)) thanh dieu ((cua tre) OR (cuu tre)).
• Adding a wildcard symbol may retrieve word variants: toc sach thuc hanh xa hoi. hieu va chao ((xu van) or (su van)) thanh dieu ((cua tre) or (cuu tre))*.