Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
nhung cong » dung cong, thong cong, hang cong
chau tinh » cuu tinh, ha tinh, cua tinh
trung nam » trung tam, trong nam, trung cap
nam nhung » cam nhung, tham nhung, va nhung
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
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: hoc ((chau tinh) or (chieu sang)) - thanh trung nam nhung cong van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chau tinh) OR (chieu sang)) - thanh trung nam nhung cong van toan ban*.