Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trang » thanh trung, canh tranh, hanh trinh
trinh toan » tinh toan, thanh toan, trinh han
mat duong » mai duong, xuat duong, hai duong
toan cau » toan cao, toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu xanh - hanh trang ((mat duong) or (va dung)) cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu xanh - hanh trang ((mat duong) OR (va dung)) cong trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: toc thieu xanh - hanh trang ((mat duong) or (va dung)) cong trinh toan cau*.