Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
cua thong » cua thuong, cua khong, cua tong
anh bang » anh hoang, anh quang, tinh bang
bang cua » ban cua, mang cua, hang cua
cong tap » cuong tap, cong tac, cong tan
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((((chieu sach) OR (chiet tach))) or (hieu manh)) - anh bang cua thong cong tap toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((((chieu sach) OR (chiet tach))) OR (hieu manh)) - anh bang cua thong cong tap toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((((chieu sach) OR (chiet tach))) or (hieu manh)) - anh bang cua thong cong tap toan ban*".