Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
manh truong » manh trung, manh tuong, anh truong
phuong dinh » phuong binh, phuong linh, phuong trinh
chieu sang » chieu sach, chieu xanh, hieu lang
dinh toan » tinh toan, hinh toan, minh toan
chu sang » chu bang, thu sang, chuc nang
dai dung » dai duong, dan dung, mai dung
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: theo ((chu sang) OR (chieu sang)) - manh truong dai dung phuong dinh toan cao~.
• Adding a wildcard symbol may retrieve word variants: theo ((chu sang) or (chieu sang)) - manh truong dai dung phuong dinh toan cao*.