Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
thanh tran » thanh trang, thanh toan, thanh tra
thong cong » trong cong, tong cong, phong chong
hoc thieu » toc thieu, hoc hien
tran van » luan van
tap toan » tap doan, tap quan, bai toan
toan ban » van ban

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