Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, phong chong
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tinh » hanh trinh, nhanh tinh, thanh tinh
ho chieu » theo chieu, hoc thieu, doi chieu
tinh cua » trinh cua, sinh cua, tinh chat
dan than » ban than, van than, dan toan
dan chan » dan gian, dan ca, van chat

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - hanh tinh cua ((thong cong) OR (thong thong)) ((dan than) OR (dan chan)) cao~.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh tinh cua ((thong cong) or (thong thong)) ((dan than) or (dan chan)) cao*.