Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
thong cong » trong cong, tong cong, thong thong
tien manh » tien thanh, tieng anh, tran manh
trinh cua » tinh cua, trinh luat, trinh quan
cua thong » cua thuong, cua khong, cua tong
tien anh » tieng anh, dien anh, tien thanh
cong san » cong tac
toan cao » toan tap
toan ban » van ban

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

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