Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
trung tham » trung tam, trung thanh, trung thang
thong cong » tong cong, thong thong, phong chong
doi chieu » doc hieu, doi chi, ho chieu
toan cau » toan cao, toan ban, toan tap

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 tham ((thong cong) OR (trong cong)) tinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh trung tham ((thong cong) OR (trong cong)) tinh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh trung tham ((thong cong) OR (trong cong)) tinh toan cau*.