Perhaps you should try some spelling variations:
phuong trinh » chuong trinh, cong trinh, phuong anh
huong tran » huong dan, quang tran, chuong trinh
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
doi hieu » doc hieu, doi hien, hoi hieu
toan cao » toan ban, toan tap
cua thi » cua thoi, cua toi, cua chi

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: ((doi hieu) OR (doi chieu)) lang - canh tranh cua thi ((phuong trinh) OR (huong tran)) toan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi hieu) or (doi chieu)) lang - canh tranh cua thi ((phuong trinh) OR (huong tran)) toan cao~".
• Adding a wildcard symbol may retrieve word variants: ((doi hieu) or (doi chieu)) lang - canh tranh cua thi ((phuong trinh) OR (huong tran)) toan cao*.