Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
hien cac » thien cac, vien cac, hieu cac
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
van hanh » van thanh, ban hanh, van ban
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh
cua tu » cua tuc, cua su, cua cu

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 ky nang xa hoi. hieu hien cac nuoc ((van hanh) or (((van anh) OR (van minh)))) dai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang xa hoi. hieu hien cac nuoc ((van hanh) OR (((van anh) OR (van minh)))) dai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. hieu hien cac nuoc ((van hanh) or (((van anh) OR (van minh)))) dai cua tu".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. hieu hien cac nuoc ((van hanh) or (((van anh) OR (van minh)))) dai cua tu*.