Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » hanh chinh
hoc tien » hoc tieng, hoc vien, hoc tren
va thong » va thuong, va phuong, he thong
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: ((hoc tien) or (hoc hien)) anh - ((hanh trinh) or (canh tranh)) va thong cong san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((hoc tien) OR (hoc hien)) anh - ((hanh trinh) OR (canh tranh)) va thong cong san toan cau.
• Adding a wildcard symbol may retrieve word variants: ((hoc tien) or (hoc hien)) anh - ((hanh trinh) or (canh tranh)) va thong cong san toan cau*.