Perhaps you should try some spelling variations:
doanh chung » doanh nhung, doanh thuong, doan hung
doanh chua » doanh cua, doanh chu, doanh chuoi
hoc chieu » ho chieu, hoc hien, hoc dieu
hoc thieu » toc thieu, hoc hien
bang cong » dang cong, bang song, hang cong
cong tuan » cong tan, cong luan, cong thanh
tuan phan » luan phan, toan phan, tuan pham
phan cau » phan dau, phan cac, phan tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((hoc chieu) or (hoc thieu)) xanh - hanh ((doanh chua) OR (doanh chung)) bang cong tuan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc chieu) OR (hoc thieu)) xanh - hanh ((doanh chua) OR (doanh chung)) bang cong tuan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chieu) or (hoc thieu)) xanh - hanh ((doanh chua) OR (doanh chung)) bang cong tuan phan cau".
• Adding a wildcard symbol may retrieve word variants: ((hoc chieu) or (hoc thieu)) xanh - hanh ((doanh chua) OR (doanh chung)) bang cong tuan phan cau*.