Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cua truong » cua trung, xuan truong, cac truong
duong manh » duong van
trinh cua » tinh cua, trinh luat, trinh quan
cong manh » cong danh, cong thanh, hoang manh
theo chu » theo chieu, cho chu, chao chu
toan tap » toan ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo tieu) or (theo chu)) tinh - hanh trinh cua truong ((cong manh) OR (duong manh)) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo tieu) OR (theo chu)) tinh - hanh trinh cua truong ((cong manh) OR (duong manh)) toan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo tieu) or (theo chu)) tinh - hanh trinh cua truong ((cong manh) OR (duong manh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ((theo tieu) or (theo chu)) tinh - hanh trinh cua truong ((cong manh) OR (duong manh)) toan tap*.