Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, nhieu tang
cong thanh » dong thanh, cong trinh, cong tan
hieu lang » hieu quang, nhieu tang, hieu van
thang thu » thong thu, thang tu, thanh thu
hang cong » dang cong, hang nong, bang cong
thanh dan » thanh san, thanh van, thanh dat
thu hang » thi hang, thuc hanh, thu huong

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((chieu sang) OR (hieu lang)) - thanh thang thu hang cong thanh dan ca~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((chieu sang) OR (hieu lang)) - thanh thang thu hang cong thanh dan ca*".