Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh tranh » hanh trinh, hanh trang, lanh tranh
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua thong » cua thuong, cua khong, cua tong
doc hieu » toc thieu, hoc thieu, hoc hien
cong tac » cong ty
toan cao » toan tap
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 - ((hanh tranh) or (canh tranh)) cua thong cong tac ((toan cao) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh tranh) OR (canh tranh)) cua thong cong tac ((toan cao) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh tranh) or (canh tranh)) cua thong cong tac ((toan cao) or (toan ban))*.