Perhaps you should try some spelling variations:
sach thue » sach thieu, sach tham, cach thuc
hanh dieu » han dieu, hinh dieu, hoang dieu
cua triet » cua viet, su triet, va triet
sach thu » sach thieu, sach tham, cach thuc
van hanh » van thanh, ban hanh, van anh
dieu cua » dieu tra
hang xa » hoang xa, hang va, hang ca
hieu va » lieu va, hieu qua
va chao » va cao, va chat, va cham
xu van » tu van, vu van, su 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 thu) or (sach thue)) hang xa hoi. hieu va chao xu van hanh dieu cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((sach thu) OR (sach thue)) hang xa hoi. hieu va chao xu van hanh dieu cua triet.
• Adding a wildcard symbol may retrieve word variants: toc ((sach thu) or (sach thue)) hang xa hoi. hieu va chao xu van hanh dieu cua triet*.