Perhaps you should try some spelling variations:
thieu tang » nhieu tang, thieu khang, thieu quang
cham duc » pham duc, cham soc, pham duy
va hanh » van hanh, va thanh, va danh
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ve cham » va cham, ve chat, vu cham
ma hoi » mai hoi, ma hoa, me hoi
dam va » dam van, nam va
dam ha » nam ha, dam phan

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach thieu tang ((ma hoi) or (xa hoi)). hieu ve cham duc va hanh ((dam va) or (dam ha)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach thieu tang ((ma hoi) OR (xa hoi)). hieu ve cham duc va hanh ((dam va) OR (dam ha)) triet.
• Adding a wildcard symbol may retrieve word variants: so sach thieu tang ((ma hoi) or (xa hoi)). hieu ve cham duc va hanh ((dam va) or (dam ha)) triet*.