Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
hanh doi » thanh doi, hanh noi, hang doi
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
van cau » van dau, van hau, van chat
va hanh » van hanh, va thanh, va danh
doi cua » dai cua, hoi cua
y nang » ky nang, ly nang, v nang
ma hoi » xa hoi, ma hoa, me hoi
cau tu » dau tu, cau truc

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: su sach y nang ((ma hoi) OR (mai hoi)). thien van cau tu va hanh doi cua triet~.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoi) or (mai hoi)). thien van cau tu va hanh doi cua triet*.