Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thu sach » tu sach, thuat sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh vai » hanh vi, hanh va, hanh tai
tu cach » tu cac
ky sang » ky dang, ky tang, duy sang
cac vuc » cac nuoc, cac vung, cac cuoc
vuc van » duc van, luc van, thuc van
vai cua » dai cua, hai cua, lai cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (thu sach)) ((ky sang) or (ky nang)) xa hoi. lieu va cac vuc van hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (thu sach)) ((ky sang) OR (ky nang)) xa hoi. lieu va cac vuc van hanh vai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (thu sach)) ((ky sang) or (ky nang)) xa hoi. lieu va cac vuc van hanh vai cua triet*.