Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu quang » thieu quang, hieu quan, hieu qua
nhanh tinh » nhanh thanh, hanh trinh, nhan sinh
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
than phan » thanh phan, toan phan, thanh pham
tinh cua » trinh cua, sinh cua, tinh chat
tai phan » tai thanh, tai phong, tai ngan

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 quang)) - nhanh tinh cua nhung cong ((tai phan) or (than phan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (hieu quang)) - nhanh tinh cua nhung cong ((tai phan) OR (than phan)) cau.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) or (hieu quang)) - nhanh tinh cua nhung cong ((tai phan) or (than phan)) cau*.