Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
tranh cua » doanh cua, manh cua
tong cong » trong cong, cong cong, dung cong
doc hieu » toc thieu, hoc thieu, hoc hien
cua tong » cua cong, cua dong, cua nong
cong dan » cong san, cong tan, huong dan
toan cau » toan cao, toan tai
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh cua tong cong dan ((toan cau) or (((toan tap) or (toan ban))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh cua tong cong dan ((toan cau) OR (((toan tap) OR (toan ban)))).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh tranh cua tong cong dan ((toan cau) or (((toan tap) or (toan ban))))*.