Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
theo dieu » theo chieu, thuoc dieu, he dieu
trong tap » trong thap, tong tap, trong tan
trinh tu » trinh ky, trinh do
tap toan » tap doan, tap quan, bai toan
toan cao » toan ban, toan tap
tu dung » tuc dung, tu duong, su dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo dieu) or (theo tieu)) hanh - hanh trinh tu dung trong tap toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo dieu) OR (theo tieu)) hanh - hanh trinh tu dung trong tap toan cao.
• Adding a wildcard symbol may retrieve word variants: ((theo dieu) or (theo tieu)) hanh - hanh trinh tu dung trong tap toan cao*.