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