Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sach » chinh sach, chiet tach, chieu sang
cua trong » cua truong, cua trung, ca trong
qua trong » quan trong, qua trinh, qua song
cong vang » cong lang, cong quang, cong ngang
thanh lap » thanh san, phan lap, thanh hai
ho chieu » theo chieu, hoc thieu, doi chieu
than cap » khan cap, thanh cac, than cua

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 trung ((cua trong) or (qua trong)) cong vang ((than cap) or (thanh lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh trung ((cua trong) OR (qua trong)) cong vang ((than cap) OR (thanh lap)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh trung ((cua trong) or (qua trong)) cong vang ((than cap) or (thanh lap))*.