Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
chao chu » cho chu, cua chu, cao cho
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 chieu) or (chao chu)) tinh - ((hanh trinh) or (canh tranh)) va nhung cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (chao chu)) tinh - ((hanh trinh) OR (canh tranh)) va nhung cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (chao chu)) tinh - ((hanh trinh) or (canh tranh)) va nhung cong san toan cau*.