Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh
thien danh » thien dang, thien thanh, thien chanh
hanh tranh » canh tranh, hanh trinh, hanh trang
thien anh » tien anh, thien thanh, thien chanh
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
cua bang » chua bang, cua ban, cua dang
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
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: hoc ((((thieu xanh) or (thien danh))) or (thien anh)) - hanh tranh cua bang cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu xanh) OR (thien danh))) OR (thien anh)) - hanh tranh cua bang cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu xanh) or (thien danh))) or (thien anh)) - hanh tranh cua bang cong dan toan cau*.