Perhaps you should try some spelling variations:
cang thang » cong thanh, dang thanh
hieu manh » chieu xanh, hieu nganh, dieu hanh
luan hoan » luan van
hoan thon » hoa thon, hoang thoan, hoan thien
thon hang » thon chang, thon lang, thong hoang
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
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: doc hieu manh - luan hoan thon hang cong ((van than) or (cang thang)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - luan hoan thon hang cong ((van than) OR (cang thang)) cau*.