Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
duc manh » suc manh, duc anh, duc minh
va triet » va thiet, va trien, ve triet
sach ky » sac ky, sach y, sach ty
va tham » van tham, va cham, va thanh
hanh di » hanh vi, hanh de, hang di
x hoi » xa hoi, o hoi, x ho
di va » dai va, di vao, doi va

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang x hoi. lieu va tham ((duc manh) or (duc tan)) hanh di va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. lieu va tham ((duc manh) OR (duc tan)) hanh di va triet.
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. lieu va tham ((duc manh) or (duc tan)) hanh di va triet*.