Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hieu quang » thieu quang, hieu quan, hieu qua
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cong nong » cong dong, cong cong, cong trong
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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 (hieu quang)) - hanh trang cua cong nong ((dan than) or (dan chan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (hieu quang)) - hanh trang cua cong nong ((dan than) OR (dan chan)) cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) or (hieu quang)) - hanh trang cua cong nong ((dan than) or (dan chan)) cao*.