Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
trung phan » trung thanh, trung ha, trung tuan
chong cong » cong cong, thong cong, cuong cong
dung phan » dung nhan, dung luan, dung ha
cong dan » cong san, cong tan, huong dan
dan can » dan chan, dan canh, dan ca
can ban » van ban, toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc thieu quang - thanh ((dung phan) or (trung phan)) chong cong dan can ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc thieu quang - thanh ((dung phan) OR (trung phan)) chong cong dan can ban*.