Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hoc thieu » toc thieu, hoc hien
van thong » van thuong, van phong, va thong
ho chieu » theo chieu, doi chieu, mot chieu
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc thieu) OR (ho chieu)) xanh - hanh trinh ((van thong) OR (he thong)) cong dan toan cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc thieu) OR (ho chieu)) xanh - hanh trinh ((van thong) OR (he thong)) cong dan toan cau*.