Perhaps you should try some spelling variations:
thanh tung » thanh cong
chieu sang » chieu sach, chieu xanh, hieu lang
cua truong » cua trung, xuan truong, cac truong
hieu van » hieu va, thien van, lieu va
tung cua » trung cua, tuong cua, dung cua
cong dan » cong san, cong tan, cong dong
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 sang) or (hieu van)) - thanh tung cua truong ((cong dan) or (huong dan)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu van)) - thanh tung cua truong ((cong dan) OR (huong dan)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu van)) - thanh tung cua truong ((cong dan) or (huong dan)) toan ban*.