Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh tranh » canh tranh, hanh trinh, hanh trang
hoc thieu » toc thieu, hoc hien
tranh va » tranh van, trang va, trinh va
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cau » toan cao, toan tap, toan tai
toan ban » van ban
va hang » van hang, va nang, va lang

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: hoc thieu xanh - hanh tranh va hang ((cong dan) OR (cong san)) ((toan cau) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh tranh va hang ((cong dan) or (cong san)) ((toan cau) or (toan ban))*.