Perhaps you should try some spelling variations:
chieu sach » chieu sang, chieu xanh, hieu cach
canh doanh » hanh doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, hang cong
doanh cua » doanh luan
cua nhung » va nhung
cong tinh » cong trinh, cong vinh, long tinh
toan cao » toan ban, toan tap

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) or (chinh sach))) or (chiet tach)) - canh doanh cua nhung cong tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (chinh sach))) OR (chiet tach)) - canh doanh cua nhung cong tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) or (chinh sach))) or (chiet tach)) - canh doanh cua nhung cong tinh toan cao*.