Perhaps you should try some spelling variations:
thuat bang » thuat ban, thuat mang, thuat nang
hieu manh » chieu xanh, hieu nganh, dieu hanh
quan lang » quan hoang, gian lang, quan luan
hoc hieu » hoc thieu, hoc hien, doc hieu
cong dan » cong san, cong tan, huong dan
dan chan » dan gian, dan ca, van chat
chan ta » chan tha, nhan tai, nhan tao

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 (thuat bang)) cong dan chan ta~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh ((quan lang) OR (thuat bang)) cong dan chan ta*.