Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan lang » quan hoang, gian lang, quan luan
tuan dang » tran dang, tuan bang, tuan dung
doc hieu » toc thieu, hoc thieu, hoc hien
cong van » cong vang, cong san, song van
van chat » cao chat
chat ta » chat tai, chat va, chan ta

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 - canh tranh ((quan lang) or (tuan dang)) cong van chat ta~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - canh tranh ((quan lang) OR (tuan dang)) cong van chat ta*.