Perhaps you should try some spelling variations:
thanh trong » thanh trung, tranh trong, hanh trong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
can thong » ban thong, chan thuong, toan thong
van thong » van thuong, van phong, va thong
cong van » cong vang, cong san, song van
van than » van thanh, van thang, van tuan
than cau » toan cau, phan cau, than cap

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