Perhaps you should try some spelling variations:
thanh trung » thanh tung
vien nganh » vien thanh
trung luan » truong luan, trung tuan, trung quan
hieu xanh » chieu xanh, hieu manh, hieu nganh
luan dong » luan cong, quan dong, luan nong
dong cong » duong cong, dung cong, dang cong
tran van » luan van
san van » tan van, luan van, dang 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 (vien nganh)) - thanh trung luan dong cong ((san van) OR (tran van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (vien nganh)) - thanh trung luan dong cong ((san van) OR (tran van)) ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (vien nganh)) - thanh trung luan dong cong ((san van) OR (tran van)) ban*".