Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
canh thanh » canh tranh, danh thanh, anh thanh
nhung cong » dung cong, thong cong, hang cong
thanh van » thanh san, thanh toan, thanh phan
bang cong » dang cong, bang song, hang cong
doan phan » doanh phan, toan phan, dan phan
phan cac » nhan cach, phan dau, phan lap

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: ho ((chieu sang) OR (chieu sach)) - canh thanh van ((nhung cong) OR (bang cong)) doan phan cac~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) OR (chieu sach)) - canh thanh van ((nhung cong) or (bang cong)) doan phan cac~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) OR (chieu sach)) - canh thanh van ((nhung cong) or (bang cong)) doan phan cac*.