Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh dung » thanh duong, thanh tung, thanh hung
dung chung » dung cong, dung ung, dung trung
hoc thieu » toc thieu, hoc hien
chung han » chung nhan, chung than, chuong han
tan van » tran van, tang van, luan van
dao van » do 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: hoc thieu xanh - thanh dung chung han tong ((tan van) or (dao van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - thanh dung chung han tong ((tan van) OR (dao van)) ban.
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - thanh dung chung han tong ((tan van) or (dao van)) ban*.