Perhaps you should try some spelling variations:
tranh tuan » tran tuan, tranh luan, thanh tuan
phong cong » phong chong, thong cong, phong dong
chong cong » cong cong, thong cong, cuong cong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doc hieu » toc thieu, hoc thieu, hoc hien
tuan ban » tuan bang, toan ban, luan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh tranh tuan ((phong cong) or (chong cong)) anh tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh tranh tuan ((phong cong) OR (chong cong)) anh tuan ban*.