Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh dung » thanh dung, anh dung, hanh dong
cua thong » cua thuong, cua khong, cua tong
thong dan » thong van, tuong dan, thong den
dung cua » dung luan, dung cho
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (trieu tinh)) - hanh dung cua thong thong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (trieu tinh)) - hanh dung cua thong thong dan than cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (trieu tinh)) - hanh dung cua thong thong dan than cao*.