Perhaps you should try some spelling variations:
lang thang » cang thang, dang thanh, hung thang
chieu sach » chinh sach, chiet tach, chieu sang
sach nang » cach mang, sach dung, sach danh
nang thuc » dang thuoc, nhanh thuc, trang thuc
thuc dung » thuoc dung, thuy dung, tuc dung
dung cong » dung trong
dang tran » dang thanh, quang tran, hoang tran
ho chieu » theo chieu, hoc thieu, mot chieu

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 - sach nang thuc dung cong ((lang thang) or (dang tran)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - sach nang thuc dung cong ((lang thang) OR (dang tran)) cao*.