Perhaps you should try some spelling variations:
dang thuong » hang thuong, dung thuong, dong thuong
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
thuong van » thong van, truong van, thuong va
doi chieu » doc hieu, doi chi, ho chieu
trung cua » truong cua, trung tuan, trung cap
van tai » von tai, van tuan
tai tap » bai tap, tai tao, hai 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 - manh ((trung cua) or (truong cao)) dang thuong van tai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - manh ((trung cua) OR (truong cao)) dang thuong van tai tap.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - manh ((trung cua) or (truong cao)) dang thuong van tai tap*.