Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuong quy » nhung quy, thong que, huong que
nhung cong » dung cong, thong cong, hang cong
hieu lang » chieu sang, hieu quang, nhieu tang
thong qua » thong quan, thong cua, thong tu
cong ban » cong bang, cong san, cong tan
ban phan » ban phap, van phan, ban than
phan cac » nhan cach, phan dau, phan lap

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