Perhaps you should try some spelling variations:
thong trong » thuong trong, thong thong, thong thuong
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
trung tham » trung thanh, trung thang, trung ha
trong vinh » trong kinh, trong sinh, trong linh
vinh toan » tinh toan, hinh toan, minh toan
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 xanh) or (chieu sach)) - thanh ((trung tham) OR (trung tam)) thong trong vinh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu sach)) - thanh ((trung tham) OR (trung tam)) thong trong vinh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sach)) - thanh ((trung tham) OR (trung tam)) thong trong vinh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - thanh ((trung tham) OR (trung tam)) thong trong vinh toan cau*.