Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
sach ty » sach tu, sach thu, xach tay
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va danh » va dinh, va dan, va hanh
sai cua » dai cua, hai cua, lai cua
x hoi » xa hoi, o hoi, x ho
ve am » va am

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach ty) OR (sach y)) nang x hoi. hieu ve am thuc va danh sai cua triet~.
• Adding a wildcard symbol may retrieve word variants: tu ((sach ty) or (sach y)) nang x hoi. hieu ve am thuc va danh sai cua triet*.