Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
cua truong » cua trung, xuan truong, cac truong
qua trong » quan trong, qua trinh, qua song
song van » hoang van, trong van, duong van
van chat » cao chat
chat cac » chat cam, chat cao, cho cac

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)) - canh tranh ((qua trong) or (cua truong)) song van chat cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu xanh)) - canh tranh ((qua trong) OR (cua truong)) song van chat cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - canh tranh ((qua trong) or (cua truong)) song van chat cac".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - canh tranh ((qua trong) or (cua truong)) song van chat cac*.