Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien danh
thien anh » thien danh, tien anh, thien thanh
hanh phan » thanh phan, anh phan, hanh han
bang cong » dang cong, bang song, hang cong
hanh san » thanh san, khach san, thanh son
cua bang » chua bang, cua ban, cua dang
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van 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 anh)) - ((hanh phan) or (hanh san)) cua bang cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (thien anh)) - ((hanh phan) OR (hanh san)) cua bang cong tan toan cau*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (thien anh)) - ((hanh phan) or (hanh san)) cua bang cong tan toan cau*".