Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, kieu tinh
canh doanh » hanh doanh, chinh doanh, doanh doanh
chau tinh » cuu tinh, ha tinh, cua tinh
doanh cua » doanh luan
bang tong » bang tuong, bang song, bang cong
cua bang » chua bang, cua ban, cua dang
tong bai » thong bai, trong bai, tong tai
bai toan » bai tap
toan cau » 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: ho ((chieu tinh) OR (chau tinh)) - canh doanh cua bang tong bai toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu tinh) OR (chau tinh)) - canh doanh cua bang tong bai toan cau*".