Perhaps you should try some spelling variations:
hanh thong » anh thong, hanh trong, hang thong
thong phan » thong quan, chong phap, thong van
hieu lang » chieu sang, hieu quang, nhieu tang
phan dung » phan ung, phan dang, chan dung
dung cong » dung trong
danh than » danh thanh, danh thang, dan than
danh nhan » doanh nhan, thanh nhan, benh nhan
doc hieu » toc thieu, hoc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu lang - hanh thong phan dung cong ((danh than) or (danh nhan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu lang - hanh thong phan dung cong ((danh than) OR (danh nhan)) tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu lang - hanh thong phan dung cong ((danh than) or (danh nhan)) tap*.