Perhaps you should try some spelling variations:
thuong con » thuong dong, truong cong, thong cong
cua thuong » cua truong, cua phuong, ca thuong
hieu manh » chieu xanh, hieu nganh, dieu hanh
manh tung » manh hung, thanh tung
doc hieu » toc thieu, hoc thieu, hoc hien
tung cua » trung cua, tuong cua, dung cua
toan ban » van ban
con tap » cong tac, cong tan, tong tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu manh - manh tung cua thuong con tap ((((toan cao) OR (toan ban))) or (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu manh - manh tung cua thuong con tap ((((toan cao) OR (toan ban))) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu manh - manh tung cua thuong con tap ((((toan cao) OR (toan ban))) or (toan tap))".
• Adding a wildcard symbol may retrieve word variants: doc hieu manh - manh tung cua thuong con tap ((((toan cao) OR (toan ban))) or (toan tap))*.