Perhaps you should try some spelling variations:
thong thuong » thong thong, hang thuong, cong thuong
thong trong » thuong trong, thong thong, khoang trong
thanh trung » thanh tung
chieu xanh » chieu sach, chieu sang, chieu tinh
trung tham » trung tam, trung thanh, trung thang
doi chieu » doc hieu, doi chi, ho chieu
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 - thanh trung tham ((thong trong) OR (thong thuong)) vinh toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - thanh trung tham ((thong trong) OR (thong thuong)) vinh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh trung tham ((thong trong) OR (thong thuong)) vinh toan cau*.