Perhaps you should try some spelling variations:
thanh truong » thanh trung, thanh thuong, thanh tung
hieu quang » thieu quang, hieu quan, hieu qua
truong cao » truong dai
khong cang » thong cong, hong bang, khong dung
hieu lang » chieu sang, nhieu tang, hieu van
cao khong » cao phong, cat khong, dao khong
cang san » cong san, cang sau, nang sang
san phan » san pham, van phan, sat phan
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: hoc ((hieu lang) OR (hieu quang)) - thanh truong cao khong cang san phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu lang) OR (hieu quang)) - thanh truong cao khong cang san phan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu lang) OR (hieu quang)) - thanh truong cao khong cang san phan cau*.