Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sang » chieu sach, chieu xanh, hieu lang
nang hang » nang sang, hang hang, cang thang
cua nhung » va nhung
thanh thi » thanh tai, nhanh thi, thanh tri
hang cua » mang cua, hang ca, huong cua
nhan tai » hang tai, van tai, toan tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (chinh sach)) - nang hang cua nhung cong ((thanh thi) or (nhan tai)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chinh sach)) - nang hang cua nhung cong ((thanh thi) OR (nhan tai)) cao.
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chinh sach)) - nang hang cua nhung cong ((thanh thi) or (nhan tai)) cao*.