Perhaps you should try some spelling variations:
danh thanh » dinh thanh, dang thanh, nhanh thanh
thanh pham » thanh phan, thanh pho, thanh hai
hieu manh » chieu xanh, hieu nganh, dieu hanh
pham dang » phan dang, pham hang, pham quang
dang cong » dung cong
toc hieu » toc thieu, doc hieu, hoc thieu
dan tocn » dan toan, dang toan, dan hoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc hieu manh - danh thanh pham dang cong ((dan tocn) or (dan toc)) bi~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc hieu manh - danh thanh pham dang cong ((dan tocn) OR (dan toc)) bi*.