Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thong cong » trong cong, tong cong, thong thong
nhung cong » dung cong, hang cong, nhung don
hoc thieu » toc thieu, hoc hien
tang luan » dung luan
thanh tap » thanh lap, thanh tay, thanh tam
thanh tai » thanh hai, thanh toan, doanh tai
anh tang » anh bang, anh dang, anh nang

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 - anh tang luan ((thong cong) or (nhung cong)) van ((thanh tap) or (thanh tai))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - anh tang luan ((thong cong) OR (nhung cong)) van ((thanh tap) OR (thanh tai)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - anh tang luan ((thong cong) or (nhung cong)) van ((thanh tap) or (thanh tai))*.