Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thien hach » thien thanh, hien hanh
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong tac » cong ty
tac toan » tap toan, tam toan, hach toan
toan tap » toan ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu sach) OR (chinh sach))) OR (thien hach)) - canh tranh cua nhung cong tac toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((chieu sach) OR (chinh sach))) or (thien hach)) - canh tranh cua nhung cong tac toan tap~".
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu sach) OR (chinh sach))) or (thien hach)) - canh tranh cua nhung cong tac toan tap*.