Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
cong trong » cong thuong, duong trong, cong trinh
hieu lang » chieu sang, hieu quang, nhieu tang
cong cong » cong dong, trong cong, dung cong
cong thuc » cong tac
trong ca » trong cac, trong nha
thuc pha » thuc pham, thuc phan, thuc ha
ca cong » cua cong, cac cong, cao cong
pha tap » pham tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu tinh) or (hieu lang)) - cong trong ca cong cong thuc pha tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu tinh) OR (hieu lang)) - cong trong ca cong cong thuc pha tap*.