Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
canh manh » lanh manh, canh tranh, cach mang
manh cua » doanh cua, ban cua
van cong » van phong, phan cong, van duong
tan toan » tan tran, tap toan, van toan
toan cao » toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu quang)) - canh manh cua ((van cong) OR (van dong)) tan toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (hieu quang)) - canh manh cua ((van cong) OR (van dong)) tan toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (hieu quang)) - canh manh cua ((van cong) OR (van dong)) tan toan cao*.