Perhaps you should try some spelling variations:
hanh trang » thanh trung, canh tranh, hanh trinh
trinh toan » tinh toan, thanh toan, trinh han
bien tinh » bi tinh, yen tinh, diep tinh
chau tinh » cuu tinh, ha tinh, cua tinh
cua khong » hua khong, cua phuong, cua thuong
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: ho ((bien tinh) or (chau tinh)) - hanh trang ((cua khong) or (cua cong)) cong trinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((bien tinh) OR (chau tinh)) - hanh trang ((cua khong) OR (cua cong)) cong trinh toan cau.
• Adding a wildcard symbol may retrieve word variants: ho ((bien tinh) or (chau tinh)) - hanh trang ((cua khong) or (cua cong)) cong trinh toan cau*.