Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
manh trung » manh tung, thanh trung, sinh trung
thong cong » trong cong, tong cong, thong thong
hoc chieu » hoc thieu, ho chieu, hoc hien
manh hung » anh huong
cua thong » cua thuong, cua khong, cua tong
cong tan » cong tac, cong san, cong thanh
tan than » tan thanh, tan tran, ban than
than ban » thanh ban, toan ban, than man

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 - ((manh trung) or (manh hung)) cua thong cong tan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc chieu sang - ((manh trung) OR (manh hung)) cua thong cong tan than ban*.