Perhaps you should try some spelling variations:
cua triet » cua viet, va triet
hanh tai » thanh tai, hang tai, han tai
su triet » su viet, su tien, ve triet
so sach » so sanh, bo sach, co sach
van cac » van hac, van cau, dan cac
van bac » van ban, van bao, van hac
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ((van cac) or (van bac)) tu va hanh tai ((cua triet) OR (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach y nang x hoi. hieu ((van cac) OR (van bac)) tu va hanh tai ((cua triet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach y nang x hoi. hieu ((van cac) or (van bac)) tu va hanh tai ((cua triet) OR (su triet))*".