Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
chieu sach » chinh sach, chiet tach, chieu sang
dang tran » dang thanh, quang tran, hoang tran
ho chieu » theo chieu, hoc thieu, doi chieu
cac dung » cach dung, cac duong, tac dung
san tran » tan tran, ban tran, san trung

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 trong cac dung trong ((san tran) or (dang tran)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trong cac dung trong ((san tran) OR (dang tran)) cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trong cac dung trong ((san tran) or (dang tran)) cau*.