Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
thong hong » thong thong, thong hoang, thong huong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh van » tran van, trinh van, thanh van
hong luan » thong luan, phong luan, hang luan
luan phan » luan van, luan hoan
tranh va » trang va, trinh va, thanh va
phan cau » phan dau, phan cac, phan tu

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) OR (hieu manh)) - canh ((tranh va) or (tranh van)) thong hong luan phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - canh ((tranh va) OR (tranh van)) thong hong luan phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - canh ((tranh va) or (tranh van)) thong hong luan phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - canh ((tranh va) or (tranh van)) thong hong luan phan cau*.