Perhaps you should try some spelling variations:
trung phong » trong phong, rung phong, trang phong
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh xuan » tran xuan, tranh luan, thanh xuan
xuan trung » xuan truong, quang trung, doan trung
phong va » thong va, phung van, thong van
toan ban » van ban
va toan » van toan, bai toan, tap toan

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)) - hanh tranh xuan trung phong va toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - hanh tranh xuan trung phong va toan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - hanh tranh xuan trung phong va toan ban*.