Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thuat mang » thuat bang, thuat nang, thuat trang
doc chieu » doc hieu, doi chieu, toc thieu
gian lang » gian dan
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ta » chan tha, nhan tai, nhan tao

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sach - canh tranh ((gian lang) or (thuat mang)) cong dan chan ta~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sach - canh tranh ((gian lang) OR (thuat mang)) cong dan chan ta*.