Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
phan dang » phan dau, phan cong, nhan dan
cong vang » cong lang, cong quang, cong ngang
dang cua » dung cua, dong cua, mang cua
cua dung » cua dang, cua dong, qua dung
cong van » cong san, song van, cong tan
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu xanh) OR (chieu sach)) - phan dang cua dung ((cong van) or (cong vang)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - phan dang cua dung ((cong van) OR (cong vang)) than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) OR (chieu sach)) - phan dang cua dung ((cong van) or (cong vang)) than cao".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) OR (chieu sach)) - phan dang cua dung ((cong van) or (cong vang)) than cao*.