Perhaps you should try some spelling variations:
dang thuong » hang thuong, dung thuong, dong thuong
quang thong » quang phuong, quang truong, quang trung
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
qua thong » qua trong, suat thong, xuat thong
duong dan » duong dang, huong dan, duong van
dan van » dang van, doan van, dao van

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: toc ((hieu manh) OR (chieu xanh)) - dang thuong ((qua thong) OR (quang thong)) duong dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((hieu manh) or (chieu xanh)) - dang thuong ((qua thong) OR (quang thong)) duong dan van ban~".
• Adding a wildcard symbol may retrieve word variants: toc ((hieu manh) or (chieu xanh)) - dang thuong ((qua thong) OR (quang thong)) duong dan van ban*.