Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
cua thuong » cua truong, cua phuong, ca thuong
hien manh » hien hanh, tien manh, hieu manh
canh manh » lanh manh, canh tranh, cach mang
manh cua » doanh cua, ban cua
cong san » cong tac
chan dau » phan dau, han dau, chan doan
chan dan » chan doan, chan dang, nhan dan

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien manh - canh manh cua thuong cong san ((chan dau) or (chan dan))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - canh manh cua thuong cong san ((chan dau) OR (chan dan)).
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - canh manh cua thuong cong san ((chan dau) or (chan dan))*.