Perhaps you should try some spelling variations:
thuong thong » thong thong, thuong trong, thuong phuong
chieu sang » chieu sach, chieu xanh, nhieu tang
thong tinh » thuong tinh, thong tin, thong minh
hieu lang » hieu quang, nhieu tang, hieu van
trung cua » truong cua, trung tuan, dung cua
trung cap » truong cao, trung tam
toan tap » toan ban

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu sang) or (hieu lang)) - thanh ((trung cua) OR (trung cap)) thuong thong tinh toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (hieu lang)) - thanh ((trung cua) OR (trung cap)) thuong thong tinh toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (hieu lang)) - thanh ((trung cua) OR (trung cap)) thuong thong tinh toan tap".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (hieu lang)) - thanh ((trung cua) OR (trung cap)) thuong thong tinh toan tap*.