Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
chau tinh » cuu tinh, ha tinh, cua tinh
tung cua » trung cua, tuong cua, dung cua
dong bai » dong tai, dong bac, dong ban
bai toan » bai tap
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (chau tinh)) - thanh tung cua cong dong bai toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chau tinh)) - thanh tung cua cong dong bai toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (chau tinh)) - thanh tung cua cong dong bai toan ban*.