Perhaps you should try some spelling variations:
phuong dinh » phuong binh, phuong linh, phuong trinh
dung phuong » dung thuong, bang phuong, dung chung
chieu sang » chieu sach, chieu xanh, hieu lang
hanh mang » nhanh mang, hanh trang, nhanh lang
nhan dang » nhan dan, phan dang, tran dang
ho chieu » theo chieu, hoc thieu, doi chieu
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap
va dung » van dung, va duong, vat dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sang - ((hanh mang) or (nhan dang)) va dung phuong dinh ((toan cau) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sang - ((hanh mang) OR (nhan dang)) va dung phuong dinh ((toan cau) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: ho chieu sang - ((hanh mang) or (nhan dang)) va dung phuong dinh ((toan cau) or (toan cao))*.