Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhieu tang » chieu sang, hieu lang, nhiet nang
hanh tang » hanh trang, anh tang, hanh mang
dung cong » dung trong
tang cua » mang cua, hang cua, tang luan
cua dung » cua dang, cua dong, qua dung
van than » van thanh, van thang, van tuan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (nhieu tang)) - hanh tang cua dung cong ((anh tuan) or (van than)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (nhieu tang)) - hanh tang cua dung cong ((anh tuan) OR (van than)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (nhieu tang)) - hanh tang cua dung cong ((anh tuan) or (van than)) ban*.