Perhaps you should try some spelling variations:
thanh thang » nhanh thang, thanh thanh, thanh hang
chieu sang » chieu sach, chieu xanh, hieu lang
thong cong » trong cong, tong cong, thong thong
cong dang » cong dong, cong dan, cong dung
dang khan » dang khanh, dang khai, dang thanh
hieu van » hieu va, thien van, lieu va
thang va » hang va, trang va, thong va
va thong » va thuong, va phuong, he thong
khan cap » khan ap, than cap, khoan cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) or (hieu van)) - thanh thang va thong cong dang khan cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu van)) - thanh thang va thong cong dang khan cap.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (hieu van)) - thanh thang va thong cong dang khan cap*.