Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
phuong dinh » phuong binh, phuong linh, phuong trinh
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, mot chieu
dinh toan » tinh toan, hinh toan, minh toan
toan cau » toan cao, toan ban, toan tap
song va » song van, dong va, song xa

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - nang song va nhung phuong dinh toan cau~.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - nang song va nhung phuong dinh toan cau*.