Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va pham » van pham, va phat, va phap
de cua » le cua, te cua, dieu 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 sach ky nang xa hoi. lieu va pham duc ((van hanh) or (ban hanh)) de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. lieu va pham duc ((van hanh) OR (ban hanh)) de cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. lieu va pham duc ((van hanh) or (ban hanh)) de cua triet*.