Perhaps you should try some spelling variations:
thuong cong » thong cong, thuong con, thuong dong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
manh chung » manh hung, lanh chung, doanh chung
cua thuong » cua truong, cua phuong, ca thuong
chung cua » chung cu, dung cua, huong cua
cong tac » cong ty
tran cau » tran chau, toan cau, tra cau
ran cau » van cau, ban cau, can cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (chieu xanh)) - manh chung cua thuong cong tac ((tran cau) OR (ran cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - manh chung cua thuong cong tac ((tran cau) OR (ran cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) or (chieu xanh)) - manh chung cua thuong cong tac ((tran cau) OR (ran cau))".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu xanh)) - manh chung cua thuong cong tac ((tran cau) OR (ran cau))*.