Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cong ngang » cong nhan, cong nong, cong vang
cong quang » luong quang, thong quang, duong quang
cong lang » cong vang, cong luong, hoang lang
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » khan cap, thanh lap, thanh cac
tung va » trung va, tuong va, dung va
va hang » van hang, va nang, va lang

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 - thanh tung va hang ((cong ngang) or (((cong lang) OR (cong quang)))) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh tung va hang ((cong ngang) OR (((cong lang) OR (cong quang)))) than cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - thanh tung va hang ((cong ngang) or (((cong lang) OR (cong quang)))) than cap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh tung va hang ((cong ngang) or (((cong lang) OR (cong quang)))) than cap*.