Perhaps you should try some spelling variations:
trong thuong » thong thuong, trong tuong, cong thuong
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, ho chieu
trung ap » trung cap, trung lap, trung dai
thuong d » thuong da, thuong de, thuong dam
phan cau » phan dau, phan cac, phan tu

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 ap) or (trung tam)) trong thuong d phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh ((trung ap) OR (trung tam)) trong thuong d phan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh ((trung ap) or (trung tam)) trong thuong d phan cau*.