Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hai truc » dai truc, hai trac, hang truc
ban hanh » ban hang
van hanh » van thanh, van anh, van ban
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
va hai » van hai, va chai, va khai
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: su sach ty nang xa hoi. lieu va hai truc ((ban hanh) or (van hanh)) vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty nang xa hoi. lieu va hai truc ((ban hanh) OR (van hanh)) vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sach ty nang xa hoi. lieu va hai truc ((ban hanh) or (van hanh)) vi cua triet*.