Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hoc chieu » hoc thieu, ho chieu, hoc hien
doanh cua » doanh luan
hang cong » dang cong, hang nong, bang cong
dung cong » dung trong
cua chat » cua cha, chuan chat, cao chat
ban cua » ban quan
tac cua » tac quan, thuc cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sach - hanh ((ban cua) or (doanh cua)) ((hang cong) or (dung cong)) tac cua chat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sach - hanh ((ban cua) OR (doanh cua)) ((hang cong) OR (dung cong)) tac cua chat.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sach - hanh ((ban cua) or (doanh cua)) ((hang cong) or (dung cong)) tac cua chat*.