Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
thong cong » trong cong, tong cong, thong thong
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang cong » dang cong, hang nong, bang cong
dan thanh » dang thanh, danh thanh, ban thanh
hoc hieu » hoc thieu, hoc hien, doc hieu
thanh ca » thanh cha, thanh cac, thanh ha

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 - hanh trinh quan ((thong cong) or (hang cong)) dan thanh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - hanh trinh quan ((thong cong) OR (hang cong)) dan thanh ca*.