Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
phong thuc » phuong thuc, phong tuc, phong thuy
tinh lang » dinh lang, tinh sang, tinh bang
bang cong » dang cong, bang song, hang cong
van phong » van dong, hai phong
ho chieu » theo chieu, hoc thieu, mot chieu
chu bang » thu bang, chuc nang, chu quang
cong van » cong vang, cong san, song van

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 - ((tinh quang) or (tinh lang)) chu bang cong van phong thuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((tinh quang) OR (tinh lang)) chu bang cong van phong thuc*.