Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
hanh hanh » hanh han, xanh hanh, nhanh thanh
cong dan » cong san, cong tan, cong dong
cong tac » cong ty
toan cau » toan cao, toan ban, toan tap
vi hang » voi hang, va hang, vi hanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh hanh vi hang ((((cong dan) or (cong tac))) or (huong dan)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh hanh vi hang ((((cong dan) OR (cong tac))) OR (huong dan)) toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh hanh vi hang ((((cong dan) or (cong tac))) or (huong dan)) toan cau*.