Perhaps you should try some spelling variations:
tieu xanh » tieu danh, chieu xanh, dieu hanh
trung hoc » trung quoc
hang cong » dang cong, hang nong, bang cong
cong manh » cong danh, duong manh, cong thanh
manh toan » thanh toan, anh tuan, tinh toan
trang va » tran van, hang va
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: theo tieu xanh - hanh ((trung hoc) or (trang va)) hang cong manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tieu xanh - hanh ((trung hoc) OR (trang va)) hang cong manh toan cau.
• Adding a wildcard symbol may retrieve word variants: theo tieu xanh - hanh ((trung hoc) or (trang va)) hang cong manh toan cau*.