Perhaps you should try some spelling variations:
thanh trung » thanh tung
chieu sang » chieu sach, chieu xanh, hieu lang
doc chieu » doc hieu, doi chieu, toc thieu
cong san » cong tac
ap dung » van dung
san tan » van tan, san van, san tay
tan cau » toan cau, van cau, tan ca

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc chieu sang - thanh trung ((ap dung) or (xay dung)) cong san tan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sang - thanh trung ((ap dung) OR (xay dung)) cong san tan cau.
• Adding a wildcard symbol may retrieve word variants: doc chieu sang - thanh trung ((ap dung) or (xay dung)) cong san tan cau*.