Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
thanh tung » thanh cong
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
cuong tap » luong tap, cong tac, luong tai
tung cua » trung cua, tuong cua, dung cua
tong tap » tuong tac, trong tan, cong tac
quan tai » quan tri, quang tri, quan li

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 - thanh tung cua nhung ((tong tap) or (cuong tap)) quan tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh tung cua nhung ((tong tap) OR (cuong tap)) quan tai.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tung cua nhung ((tong tap) or (cuong tap)) quan tai*.