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
co sach » bo sach, cuon sach, hoc sach
nang xa » nang x, lang xa, nang ma
va nhan » van nhan, va phan, va nha
luc van » luoc van, luu van, duc van
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: ((thu sach) or (co sach)) ky nang xa hoi. hieu ((va nhan) or (ca nhan)) luc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (co sach)) ky nang xa hoi. hieu ((va nhan) OR (ca nhan)) luc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (co sach)) ky nang xa hoi. hieu ((va nhan) or (ca nhan)) luc van hanh vi cua triet*.