Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
nhieu tang » chieu sang, hieu lang, nhiet nang
thi phuong » thi truong
trinh toan » tinh toan, thanh toan, trinh han
doi nhieu » doi chieu, doi nhu, doi hien
trang cua » tang cua, trung cua, thang cua
tranh cua » doanh cua, manh cua
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: doi nhieu tang - hanh ((trang cua) OR (tranh cua)) thi phuong trinh toan cao~.
• Adding a wildcard symbol may retrieve word variants: doi nhieu tang - hanh ((trang cua) or (tranh cua)) thi phuong trinh toan cao*.