Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
so sach » so sanh, bo sach, co sach
hieu ve » hieu va, hieu van
ly nang » ky nang, ly hang, ly vang
y nang » ky nang, v nang, may nang
ma hoi » mai hoi, xa hoi, ma hoa
ve nam » he nam, va nam, le nam

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) OR (ly nang)) ma hoi. hieu ve nam thuc ((va danh) or (va hanh)) dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ((y nang) OR (ly nang)) ma hoi. hieu ve nam thuc ((va danh) OR (va hanh)) dai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ((y nang) OR (ly nang)) ma hoi. hieu ve nam thuc ((va danh) or (va hanh)) dai cua triet*".