Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh doanh » hang doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
tap toan » tap doan, tap quan, bai toan
ty toan » ly toan, huy toan, tam toan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh doanh cua dong cong ((ty toan) or (tap toan)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh doanh cua dong cong ((ty toan) OR (tap toan)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh doanh cua dong cong ((ty toan) or (tap toan)) ban*.