Perhaps you should try some spelling variations:
thanh bang » thanh hang, thanh ban, thanh hoang
toan thanh » tran thanh, hoan thanh, toan thang
hieu manh » chieu xanh, hieu nganh, dieu hanh
thien anh » thien danh, tien anh, thien thanh
manh toan » thanh toan, anh tuan, tinh toan
bang cong » dang cong, bang song, hang cong
cong san » cong tac
san toan » van toan, dan toan, xuan 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 ((hieu manh) or (thien anh)) - manh toan thanh bang cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (thien anh)) - manh toan thanh bang cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) or (thien anh)) - manh toan thanh bang cong san toan cau*.