Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
theo chieu » theo tieu, ho chieu, thi chieu
trinh toan » tinh toan, thanh toan, trinh han
cua thong » cua thuong, cua khong, cua tong
theo chu » cho chu, chao chu, theo yeu
hanh ban » thanh ban, hang ban, hanh han
hanh san » thanh san, khach san, thanh son
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (theo chu)) lang - ((hanh ban) OR (hanh san)) cua thong cong trinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (theo chu)) lang - ((hanh ban) or (hanh san)) cua thong cong trinh toan cau*.