Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
thang va » hang va, trang va, thanh va
thong va » thong cua, truong va, thong qua
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) or (hieu lang)) - thanh ((thang va) OR (thong va)) nhung cong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (hieu lang)) - thanh ((thang va) OR (thong va)) nhung cong dan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (hieu lang)) - thanh ((thang va) OR (thong va)) nhung cong dan toan cao".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (hieu lang)) - thanh ((thang va) OR (thong va)) nhung cong dan toan cao*.