Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
chieu tinh » trieu tinh, lieu tinh, chau tinh
canh doanh » hanh doanh, chinh doanh, kinh doanh
qua trong » quan trong, qua trinh, qua song
ho chieu » theo chieu, hoc thieu, doi chieu
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
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: ho chieu tinh - ((canh doanh) or (doanh doanh)) qua trong cong bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((canh doanh) OR (doanh doanh)) qua trong cong bai toan ban.
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((canh doanh) or (doanh doanh)) qua trong cong bai toan ban*.