Perhaps you should try some spelling variations:
phuong tinh » phuong trinh, phuong binh, khuong tinh
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
toan tap » toan ban
cua nhu » cua nhua, cua nha, cua khu
cua chu » sua chua

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 trung ((cua nhu) or (cua chu)) phuong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh trung ((cua nhu) OR (cua chu)) phuong tinh toan tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung ((cua nhu) or (cua chu)) phuong tinh toan tap*.