Perhaps you should try some spelling variations:
thuong quang » thong quang, truong quang, phuong quang
nhung thuong » nhung phuong, nhung huong, nhung tuong
quang than » quang thanh, quang thang, quang tuan
hieu lang » chieu sang, hieu quang, nhieu tang
trung cap » truong cao, trung tam
tung cao » nung cao, truong cao, quang cao
than cau » toan cau, phan cau, than cap
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - thanh ((tung cao) or (trung cap)) nhung thuong quang than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - thanh ((tung cao) OR (trung cap)) nhung thuong quang than cau*.