Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van tham » van thanh, van tuan, van chat
duc manh » suc manh, duc anh, duc minh
hanh doi » thanh doi, hanh noi, hang doi
sach ky » sac ky, sach y, sach ty
va tham » va cham, va thanh, va thuat
doi cua » dai cua, hoi cua
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: thu sach ky nang x hoi. lieu ((va tham) OR (van tham)) ((duc manh) or (duc tan)) hanh doi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang x hoi. lieu ((va tham) OR (van tham)) ((duc manh) OR (duc tan)) hanh doi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang x hoi. lieu ((va tham) OR (van tham)) ((duc manh) or (duc tan)) hanh doi cua triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang x hoi. lieu ((va tham) OR (van tham)) ((duc manh) or (duc tan)) hanh doi cua triet*.