Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
truong cao » truong dai
dung luong » dung thuong, dung phuong, dung truong
hoc chieu » hoc thieu, ho chieu, hoc hien
trung cap » trung tam
dung cua » dung luan, dung cho
luong va » dung va
toan cao » toan ban, toan tap
va toan » van toan, bai toan, tap toan

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 - hanh ((dung cua) or (((trung cap) or (truong cao)))) dung luong va toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - hanh ((dung cua) OR (((trung cap) OR (truong cao)))) dung luong va toan cao.
• Adding a wildcard symbol may retrieve word variants: hoc chieu sang - hanh ((dung cua) or (((trung cap) or (truong cao)))) dung luong va toan cao*.