Perhaps you should try some spelling variations:
chiet tach » chieu sach
nhan cuong » nhan tuong, nhanh chuong, nhanh chong
cuong dung » tuong duong, ung dung, thong dung
hieu lang » chieu sang, hieu quang, nhieu tang
hanh nhan » thanh nhan, danh nhan, anh nhan
ban thanh » ban hanh, ban hang
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: theo ((hieu lang) or (chiet tach)) - hanh nhan cuong dung trong ((van than) or (ban thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu lang) OR (chiet tach)) - hanh nhan cuong dung trong ((van than) OR (ban thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu lang) or (chiet tach)) - hanh nhan cuong dung trong ((van than) or (ban thanh)) cau*.