Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
kho tang » cao tang
hanh dao » lanh dao, thanh dat, thanh dam
van hanh » van thanh, ban hanh, van anh
sach kho » bach khoa, sach dao, sach nha
va cham » va chat, va tham
dao cua » dai cua, day cua, dan cua
tuc van » thuc van, truc van, tuc va
so sach » so sanh, bo sach, co sach
ve cham » ve chat, vu cham, ve chim
ma hoi » mai hoi, ma hoa, me hoi

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 kho tang ((ma hoi) or (xa hoi)). hieu ((ve cham) OR (va cham)) tuc van hanh dao cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach kho tang ((ma hoi) OR (xa hoi)). hieu ((ve cham) OR (va cham)) tuc van hanh dao cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach kho tang ((ma hoi) or (xa hoi)). hieu ((ve cham) OR (va cham)) tuc van hanh dao cua triet".
• Adding a wildcard symbol may retrieve word variants: so sach kho tang ((ma hoi) or (xa hoi)). hieu ((ve cham) OR (va cham)) tuc van hanh dao cua triet*.