Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
khuong tinh » chuong trinh, phuong binh, khun tinh
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh trinh » canh tranh, hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
trinh ve » trinh he, trinh va, trinh vi
ve nhung » va nhung, tu nhung
toan cau » toan ban, toan tap, toan tai
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: ho chieu xanh - hanh trinh ve nhung ((khuong tinh) OR (phuong trinh)) ((toan cau) OR (toan cao))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu xanh - hanh trinh ve nhung ((khuong tinh) OR (phuong trinh)) ((toan cau) or (toan cao))~".
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - hanh trinh ve nhung ((khuong tinh) OR (phuong trinh)) ((toan cau) or (toan cao))*.