Perhaps you should try some spelling variations:
hieu hien » bieu hien, chieu chien, dieu khien
dieu hien » dieu khien, dieu kien, bieu hien
hanh vai » hanh vi, hanh va, hanh tai
su sach » so sach
vai cua » dai cua, hai cua, lai cua
vu sach » vu bach, vu khach
ty lang » tay lang, ty xang, ty hang
lang xa » lang ha, dang xay, lang van
va hanh » van hanh, va thanh, va danh
cac ly » cac ky, cac le, cam ly
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) or (vu sach)) ty lang xa hoi. ((hieu hien) OR (dieu hien)) cac ly va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu sach)) ty lang xa hoi. ((hieu hien) OR (dieu hien)) cac ly va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) ty lang xa hoi. ((hieu hien) OR (dieu hien)) cac ly va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) ty lang xa hoi. ((hieu hien) OR (dieu hien)) cac ly va hanh vai cua te*.