Perhaps you should try some spelling variations:
dang thuong » hang thuong, dung thuong, dong thuong
thang cong » thanh cong, thang long, thong cong
cong quang » luong quang, thong quang, duong quang
quang dang » quang dung, quang dong, quang hoang
thuong dan » huong dan, thuong han, thuong dam
hieu manh » chieu xanh, hieu nganh, dieu hanh
kim ngan » kim ngoc
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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 manh) or (kim ngan)) - thang cong quang dang thuong dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu manh) OR (kim ngan)) - thang cong quang dang thuong dan than cap.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) or (kim ngan)) - thang cong quang dang thuong dan than cap*.