Perhaps you should try some spelling variations:
thanh trung » thanh tung
dung phuong » dung thuong, bang phuong, dung chung
phuong manh » phuong anh, phung manh, phuong danh
hieu nganh » vien nganh, hiem ngan, hieu manh
trung tuan » trung thanh, trung tam, tran tuan
hieu xanh » chieu xanh, hieu manh, dieu hanh
tuan dung » tuan duong, tran dung, tan dung

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 xanh) OR (hieu nganh)) - thanh trung tuan dung phuong manh ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu nganh)) - thanh trung tuan dung phuong manh ((toan ban) OR (van ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) OR (hieu nganh)) - thanh trung tuan dung phuong manh ((toan ban) or (van ban))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) OR (hieu nganh)) - thanh trung tuan dung phuong manh ((toan ban) or (van ban))*.