Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua
thanh lap » thanh san, phan lap, thanh hai
hoc hieu » hoc thieu, hoc hien, doc hieu
manh cua » doanh cua, ban cua
cong dan » cong tan, huong dan, cong dong
cong san » cong tac

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 cua) OR (manh cua)) thong ((cong dan) or (cong san)) thanh lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh ((tranh cua) OR (manh cua)) thong ((cong dan) OR (cong san)) thanh lap*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - canh ((tranh cua) OR (manh cua)) thong ((cong dan) or (cong san)) thanh lap*".