Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hieu nganh » vien nganh, hiem ngan, hieu manh
manh trung » manh tung, thanh trung, manh hung
van dung » van dong, xay dung, tin dung
va duong » van duong, va tuong, va huong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cau » toan cao, toan ban, toan tap

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 (hieu nganh)) - manh trung ((van dung) or (va duong)) cong tan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu nganh)) - manh trung ((van dung) OR (va duong)) cong tan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu nganh)) - manh trung ((van dung) or (va duong)) cong tan toan cau*.