Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
nhung cong » dung cong, thong cong, hang cong
trinh toan » tinh toan, thanh toan, trinh han
mon triet » minh triet, bo triet, mao triet
co trieu » cac trieu, cau trieu, mot trieu
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: ((co trieu) or (mon triet)) tinh - hanh trang va nhung cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((co trieu) OR (mon triet)) tinh - hanh trang va nhung cong trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ((co trieu) or (mon triet)) tinh - hanh trang va nhung cong trinh toan cau*.