Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhiet nang » nhiet dong, viet nang, nhieu tang
tong cong » trong cong, cong cong, dung cong
tranh ha » thanh ha, trang ha, trinh ha
cong dan » cong san, cong tan, huong dan
ha tong » han tong, ha dong, ha tang
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sach) or (nhiet nang)) - canh tranh ha tong cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (nhiet nang)) - canh tranh ha tong cong dan van ban*.