Perhaps you should try some spelling variations:
thoai son » thai son, thai song, thoai van
van thoai » van hoai, van thai, than thoai
cua triet » cua viet, su triet, va triet
lieu van » lieu va, hieu van, sieu van
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
mai hoi » mai khoi, dai hoi, lai hoi
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » xa hoi, ma hoa, me hoi
son va » song va, son la, lon va
vi cua » vai cua, di cua

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 ky nang ((ma hoi) or (mai hoi)). lieu van thoai son va danh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang ((ma hoi) OR (mai hoi)). lieu van thoai son va danh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) or (mai hoi)). lieu van thoai son va danh vi cua triet*.