Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
cua triet » cua viet, su triet, va triet
hien cac » thien cac, vien cac, hieu cac
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach
vu sach » vu bach, vu khach
nang xa » nang x, lang xa, nang ma
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van

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) or (vu sach)) ky nang xa hoi. hieu hien cac toc van hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ky nang xa hoi. hieu hien cac toc van hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ky nang xa hoi. hieu hien cac toc van hanh dai cua triet*.