Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
hanh trung » thanh trung, hanh trang, manh trung
dung cong » dung trong
quan phan » quang phan, luan phan, qua phan
trung ap » trung cap, trung lap, trung tam
cong van » cong vang, cong san, song van
van quan » van ban
ap dung » xay dung, van dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu sach) or (chieu sang)) - hanh trung ap dung cong van quan phan~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu sach) OR (chieu sang)) - hanh trung ap dung cong van quan phan*.