Perhaps you should try some spelling variations:
thanh tung » thanh cong
chieu sang » chieu sach, chieu xanh, hieu lang
luan chung » luan chinh
chung cong » nhung cong, chong cong, phung cong
tung luan » dung luan, tang luan, tong luan
cong danh » cuong danh, cong dan, cong thanh
hieu van » hieu va, thien van, lieu va

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 luan chung cong danh ((toan ban) or (van ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu van)) - thanh tung luan chung cong danh ((toan ban) OR (van ban)).
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu van)) - thanh tung luan chung cong danh ((toan ban) or (van ban))*.