Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh trung » thanh trung, hanh trang, danh trung
manh trung » manh tung, thanh trung, manh hung
thong cong » trong cong, tong cong, thong thong
cong doanh » cong danh, cong doan, dong doanh
hoc chieu » hoc thieu, ho chieu, hoc hien
cua thong » cua thuong, cua khong, cua tong
doanh van » doan van, doanh va, doanh ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc chieu sang - ((hanh trung) or (manh trung)) cua thong cong doanh van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((hanh trung) OR (manh trung)) cua thong cong doanh van ban.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - ((hanh trung) or (manh trung)) cua thong cong doanh van ban*.