Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, huong tran
thong phuong » thuong phuong, thong thuong, thong huong
nguoi thong » nguoi muong, nguoi thanh, nguoi cong
giai con » gian con, giai doan, giao cong
con hong » con song, cong thong, cong khong
hong tin » thong tin, hong tien, dong tin
tu sach » thu sach, su sach, te sach
sach ba » sach bai, sach bac, sach bao
me giai » de giai, ve giai, ke giai
ca ma » ca mau, cap ma, ca va

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( tu sach ba me giai con hong tin ) or ( tu sach ((ca ma) or (co ma)) nguoi thong phuong trinh ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( tu sach ba me giai con hong tin ) OR ( tu sach ((ca ma) OR (co ma)) nguoi thong phuong trinh )).
• Adding a wildcard symbol may retrieve word variants: (( tu sach ba me giai con hong tin ) or ( tu sach ((ca ma) or (co ma)) nguoi thong phuong trinh ))*.