Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » chieu sang, hieu quang, nhieu tang
phan dang » phan dau, phan cong, nhan dan
cong danh » cuong danh, cong dan, cong khanh
toan cao » toan ban, toan tap
dang va » dang van, dang vat, hang va

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