Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cap nuoc » dat nuoc
toc sach » hoc sach, doc sach, thuoc sach
vu khach » vu khanh, vu khac, vay khach
kho tang » cao tang
mai hoi » mai khoi, dai hoi, lai hoi
hieu va » lieu va, hieu qua
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » xa hoi, ma hoa, me hoi
va cap » va cac, va dap, va cao
vi cua » vai cua, di cua

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) or (vu khach)) kho tang ((ma hoi) OR (mai hoi)). hieu va cap nuoc va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (vu khach)) kho tang ((ma hoi) OR (mai hoi)). hieu va cap nuoc va danh vi cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (vu khach)) kho tang ((ma hoi) OR (mai hoi)). hieu va cap nuoc va danh vi cua triet*".