Perhaps you should try some spelling variations:
thanh trung » thanh tung
hieu nganh » hiem ngan, hieu manh, nghiep nganh
vien nganh » vien thanh
trung tuan » trung thanh, trung tam, tran tuan
hieu xanh » chieu xanh, hieu manh, dieu hanh
tuan dung » tuan duong, tran dung, tan dung
trong san » trong cac, cong san, dong san
san van » tan van, luan van, tran van

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))) or (vien nganh)) - thanh trung tuan dung trong san van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((((hieu xanh) OR (hieu nganh))) OR (vien nganh)) - thanh trung tuan dung trong san van ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((((hieu xanh) OR (hieu nganh))) or (vien nganh)) - thanh trung tuan dung trong san van ban*".