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

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu sach) OR (thu sach)) ((ky sang) or (ky nang)) xa hoi. lieu va cam xuc van hanh vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) ((ky sang) OR (ky nang)) xa hoi. lieu va cam xuc van hanh vai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) OR (thu sach)) ((ky sang) or (ky nang)) xa hoi. lieu va cam xuc van hanh vai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) OR (thu sach)) ((ky sang) or (ky nang)) xa hoi. lieu va cam xuc van hanh vai cua triet*.