Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, nhieu tang
trung dung » ung dung, trung uong, trinh dung
hieu lang » hieu quang, nhieu tang, hieu van
dung cong » dung trong
cong cong » cong dong, trong cong, dang cong
cong lang » cong vang, cong luong, cong quang
lang phan » nang phan, lang thang, lang phong
phan lap » phan dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) OR (hieu lang)) - thanh trung dung cong cong lang phan lap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) OR (hieu lang)) - thanh trung dung cong cong lang phan lap".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) OR (hieu lang)) - thanh trung dung cong cong lang phan lap*.