Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
thuc phuong » thu phuong, thach phuong, thi phuong
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
hanh trinh » canh tranh, hanh chinh
luat thuc » luat thue, luat tuc, luan thuc
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 ((chieu sang) OR (chieu sach)) - hanh trinh luat thuc phuong trinh ((toan cau) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chieu sach)) - hanh trinh luat thuc phuong trinh ((toan cau) OR (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chieu sach)) - hanh trinh luat thuc phuong trinh ((toan cau) OR (toan ban))*.