Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
phan cong » thanh cong
tranh va » tranh van, trang va, trinh va
ban cong » bang cong, van cong, ban huong
dan chan » dan gian, dan ca, van chat
chan cao » chan cho, chat cao, chay cao

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 sach - canh tranh va ((ban cong) OR (phan cong)) dan chan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh tranh va ((ban cong) OR (phan cong)) dan chan cao".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh tranh va ((ban cong) OR (phan cong)) dan chan cao*.