Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
thieu hang » thieu quang, thi hang, thu hang
thanh doi » thanh loi, thanh moi, thanh do
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
van bac » van ban, van bao, van hac
doi cua » dai cua, hoi cua
x hoi » xa hoi, o hoi, x ho

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 ((thieu hang) or (thieu khang)) x hoi. hieu van bac duc va thanh doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach ((thieu hang) OR (thieu khang)) x hoi. hieu van bac duc va thanh doi cua triet.
• Adding a wildcard symbol may retrieve word variants: toc sach ((thieu hang) or (thieu khang)) x hoi. hieu van bac duc va thanh doi cua triet*.