Perhaps you should try some spelling variations:
bieu hien » dieu hien, bien phien, bien nien
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
vai cua » dai cua, hai cua, lai cua
cua te » cua tu
lo va » lo van, lao va, le 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 sach ky nang xa hoi. ((bieu hien) or (dieu khien)) cac ((lo va) OR (ly va)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang xa hoi. ((bieu hien) OR (dieu khien)) cac ((lo va) OR (ly va)) hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang xa hoi. ((bieu hien) or (dieu khien)) cac ((lo va) OR (ly va)) hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: su sach ky nang xa hoi. ((bieu hien) or (dieu khien)) cac ((lo va) OR (ly va)) hanh vai cua te*.