Perhaps you should try some spelling variations:
doanh luan » doanh nhan
nhung cong » dung cong, thong cong, hang cong
cho thanh » cho phan, tro thanh, cuu thanh
tranh cua » doanh cua, manh cua
cong bai » cuong bai, cong hai, cung bai
bai toan » bai tap
toan cau » toan cao, toan ban, toan tap
doi cho » doi chi, doi co, doi pho

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi cho thanh - canh ((tranh cua) or (doanh luan)) nhung cong bai toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi cho thanh - canh ((tranh cua) OR (doanh luan)) nhung cong bai toan cau.
• Adding a wildcard symbol may retrieve word variants: doi cho thanh - canh ((tranh cua) or (doanh luan)) nhung cong bai toan cau*.