Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » lieu tinh, chau tinh, kieu tinh
thanh tung » thanh cong
trong van » trong cac
tung lap » trung lap, dung lap, tuong lai
lap dung » ap dung, lan dung, cap dung
van toan » van tuan, van tan, van thanh
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 (((chieu tinh) OR (trieu tinh)))) - thanh tung lap dung trong van toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) or (((chieu tinh) OR (trieu tinh)))) - thanh tung lap dung trong van toan cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) or (((chieu tinh) OR (trieu tinh)))) - thanh tung lap dung trong van toan cao*.