Perhaps you should try some spelling variations:
thieu bien » thieu nien, tieu bieu, hien bien
cua triet » cua viet, su triet, va triet
bien cac » vien cac, dien cac, bien ca
van hanh » van thanh, ban hanh, van anh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cac tac » cac toc, cac bac, cac dac
va hanh » va thanh, va danh, ban hanh
vi cua » vai cua, di 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. thieu bien cac tac ((va hanh) or (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang xa hoi. thieu bien cac tac ((va hanh) OR (van hanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang xa hoi. thieu bien cac tac ((va hanh) or (van hanh)) vi cua triet*.