Perhaps you should try some spelling variations:
thieu khang » chieu khong, thieu quang
tham thuc » nham thuc, pham thuc, tam thuc
cua triet » cua viet, su triet, va triet
thi hang » thi hanh, thi nang, thi hong
hang tai » hang va, dung tai
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
va tham » van tham, va cham, va thanh
thuc va » thuc vat, thuc dan, thuc day
va hang » van hang, va nang, va lang
tai cua » thai cua, tai cuc, tri cua

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 ((thi hang) or (thieu khang)) xa hoi. hieu va tham thuc va hang tai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((thi hang) OR (thieu khang)) xa hoi. hieu va tham thuc va hang tai cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ((thi hang) or (thieu khang)) xa hoi. hieu va tham thuc va hang tai cua triet*.