Perhaps you should try some spelling variations:
chieu chien » thien chien
hieu hien » bieu hien, dieu hien, dieu khien
van hanh » van thanh, ban hanh, van anh
va hanh » va thanh, va danh, ban hanh
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
cac bao » cach bao, cac bai, cac ban
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
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 hien) OR (chieu chien)) cac bao ((va hanh) or (van hanh)) vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. ((hieu hien) OR (chieu chien)) cac bao ((va hanh) OR (van hanh)) vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. ((hieu hien) OR (chieu chien)) cac bao ((va hanh) or (van hanh)) vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((hieu hien) OR (chieu chien)) cac bao ((va hanh) or (van hanh)) vai cua te*.