Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
cac cong » cua cong
cong ban » cong bang, cong san, cong tan
thanh di » thanh doi, thanh de, thanh do
nang xa » nang x, lang xa, nang ma
qua cac » cua cac
di cua » dai cua, doi cua, de cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) ky nang xa hoi. hieu qua cac cong ban thanh di cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ky nang xa hoi. hieu qua cac cong ban thanh di cua triet.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) ky nang xa hoi. hieu qua cac cong ban thanh di cua triet*.