Perhaps you should try some spelling variations:
phuong dinh » phuong binh, phuong linh, phuong trinh
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
nhan dang » nhan dan, phan dang, tran dang
dinh toan » tinh toan, hinh toan, minh toan
toan ban » van ban
cua thu » cua chu, cua tu, mua thu
ca thu » cac thu, cam thu, ca tru

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: doi ((chieu xanh) OR (chieu sach)) - nhan dang ((cua thu) OR (ca thu)) phuong dinh toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu xanh) or (chieu sach)) - nhan dang ((cua thu) OR (ca thu)) phuong dinh toan ban~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu sach)) - nhan dang ((cua thu) OR (ca thu)) phuong dinh toan ban*.