Perhaps you should try some spelling variations:
hieu hien » dieu hien, chieu chien, dieu khien
bieu hien » dieu hien, dieu khien, bien phien
hanh duoc » hanh thuoc, nganh duoc, doanh duoc
va danh » va dinh, va dan, va hanh
nang xa » nang x, lang xa, nang ma
danh vi » hanh vi, dinh vi, danh di
duoc va » nuoc va, duc va, duoc ma
cua cu » cua chu, cua cau, cua co
so sac » so sach, so dac
sac ky » cac ky, sai ky
cua su » qua su

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sac ky nang xa hoi. ((hieu hien) or (bieu hien)) hanh duoc va danh vi ((cua cu) OR (cua su))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sac ky nang xa hoi. ((hieu hien) OR (bieu hien)) hanh duoc va danh vi ((cua cu) OR (cua su))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky nang xa hoi. ((hieu hien) or (bieu hien)) hanh duoc va danh vi ((cua cu) OR (cua su))*".