Perhaps you should try some spelling variations:
trong hang » trong dang, trong hung, trong tang
chieu sang » chieu sach, chieu xanh, hieu lang
chua xang » chua nang, chuc nang, chu bang
hanh dung » thanh dung, anh dung, hanh dong
hang luan » tang luan, dung luan
dung ung » dung cong
luan cau » quan cau, lua cau, luat cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chua xang) or (chieu sang)) - hanh dung ung dung trong hang luan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chua xang) OR (chieu sang)) - hanh dung ung dung trong hang luan cau.
• Adding a wildcard symbol may retrieve word variants: chao ((chua xang) or (chieu sang)) - hanh dung ung dung trong hang luan cau*.