Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, hien hanh
manh tung » manh hung, thanh tung
bang cong » dang cong, bang song, hang cong
san thanh » ban thanh, van thanh, son thanh
thanh cao » thanh ca, thanh cac, thanh thao
tung cua » trung cua, tuong cua, dung cua
cua bang » chua bang, cua ban, cua dang
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: doc ((hieu manh) OR (dieu hanh)) - manh tung cua bang cong san thanh cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu manh) OR (dieu hanh)) - manh tung cua bang cong san thanh cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu manh) OR (dieu hanh)) - manh tung cua bang cong san thanh cao*.