Perhaps you should try some spelling variations:
chieu chien » thien chien, hieu hien
hieu thien » hieu hien, dieu khien, bieu hien
cac cong » cua cong
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cong va » dong va, cong ha, cong tac
va hanh » van hanh, va thanh, va danh
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky nang xa hoi. ((hieu thien) OR (chieu chien)) cac cong va hanh dai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. ((hieu thien) OR (chieu chien)) cac cong va hanh dai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((hieu thien) OR (chieu chien)) cac cong va hanh dai cua te*.