Perhaps you should try some spelling variations:
cong ban » cong bang, cong san, cong dan
cong tan » cong tac, cong san, cong thanh
thanh vi » hanh vi, thanh va, thanh ve
va triet » va thiet, va trien, ve triet
nang xa » nang x, lang xa, nang ma
te sac » te sach, te san
te cac » tu cac, ve cac, te cao
vi va » vi van, vai va, vu va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sac) or (te cac)) ky nang xa hoi. lieu va cac ((cong ban) OR (cong tan)) thanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sac) OR (te cac)) ky nang xa hoi. lieu va cac ((cong ban) OR (cong tan)) thanh vi va triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sac) or (te cac)) ky nang xa hoi. lieu va cac ((cong ban) OR (cong tan)) thanh vi va triet".
• Adding a wildcard symbol may retrieve word variants: ((te sac) or (te cac)) ky nang xa hoi. lieu va cac ((cong ban) OR (cong tan)) thanh vi va triet*.