Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hieu vien » hieu viec, thieu nien, hieu tieng
cua triet » cua viet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
su triet » su viet, su tien, ve triet
cac tac » cac toc, cac bac, cac dac
va hanh » van hanh, va thanh, va danh
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
tac va » tac da, tac xa, tuc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky nang x ho. ((hieu vien) or (hieu hien)) cac tac va hanh dai ((cua triet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky nang x ho. ((hieu vien) OR (hieu hien)) cac tac va hanh dai ((cua triet) OR (su triet)).
• Adding a wildcard symbol may retrieve word variants: tu san ky nang x ho. ((hieu vien) or (hieu hien)) cac tac va hanh dai ((cua triet) or (su triet))*.