Perhaps you should try some spelling variations:
thong cong » trong cong, tong cong, thong thong
hanh trinh » hanh chinh
tien manh » tien anh, tien thanh, tieng anh
cua thong » cua thuong, cua khong, cua tong
hoc tien » hoc tieng, hoc hien, hoc vien
cong san » cong tac
toan cao » toan ban
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: hoc tien manh - ((hanh trinh) or (canh tranh)) cua thong cong san ((toan cao) OR (toan tap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc tien manh - ((hanh trinh) OR (canh tranh)) cua thong cong san ((toan cao) OR (toan tap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc tien manh - ((hanh trinh) or (canh tranh)) cua thong cong san ((toan cao) OR (toan tap))".
• Adding a wildcard symbol may retrieve word variants: hoc tien manh - ((hanh trinh) or (canh tranh)) cua thong cong san ((toan cao) OR (toan tap))*.