Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong manh » phuong anh, phung manh, phuong danh
hieu nganh » vien nganh, hiem ngan, nghiep nganh
hieu manh » chieu xanh, dieu hanh, hien hanh
manh toan » thanh toan, anh tuan, tinh toan
cua bang » chua bang, cua ban, cua dang
toan cao » toan ban, toan 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 nganh) OR (hieu manh)) - ((canh tranh) or (thanh trung)) cua bang phuong manh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu nganh) OR (hieu manh)) - ((canh tranh) OR (thanh trung)) cua bang phuong manh toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu nganh) OR (hieu manh)) - ((canh tranh) or (thanh trung)) cua bang phuong manh toan cao".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu nganh) OR (hieu manh)) - ((canh tranh) or (thanh trung)) cua bang phuong manh toan cao*.