Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan lang » quan hoang, gian lang, quan luan
tuan bang » tuan dang, tuan hoang, thuat bang
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan tap » han tap, phan tap, 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: hoc hieu manh - canh tranh ((quan lang) or (tuan bang)) cong tan chan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh ((quan lang) OR (tuan bang)) cong tan chan tap*.