Perhaps you should try some spelling variations:
dieu hien » dieu khien, dieu kien, bieu hien
hieu hien » bieu hien, chieu chien, dieu khien
hanh vai » hanh vi, hanh va, hanh tai
va hanh » van hanh, va thanh, va danh
cua tuc » cua duc, cua thuoc, luat tuc
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
cac lo » cac lop, cac co, cac bo
cua tu » cua su, cua cu, cua te
su sac » su sach, su cac, su xac
lo va » lo van, lao va, ly va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. ((hieu hien) or (dieu hien)) cac lo va hanh vai ((cua tu) OR (cua tuc))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. ((hieu hien) OR (dieu hien)) cac lo va hanh vai ((cua tu) OR (cua tuc)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. ((hieu hien) or (dieu hien)) cac lo va hanh vai ((cua tu) OR (cua tuc))".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. ((hieu hien) or (dieu hien)) cac lo va hanh vai ((cua tu) OR (cua tuc))*.