Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
hieu lang » chieu sang, hieu quang, nhieu tang
vat dung » van dung, viet dung, mat duong
cong tan » cong tac, cong san, cong thanh
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap
va dung » van dung, va duong, va ung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (hieu lang)) - thanh tung ((vat dung) OR (va dung)) cong tan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu lang)) - thanh tung ((vat dung) OR (va dung)) cong tan toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu lang)) - thanh tung ((vat dung) OR (va dung)) cong tan toan cao".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu lang)) - thanh tung ((vat dung) OR (va dung)) cong tan toan cao*.