Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hanh trinh » hanh chinh
hoc tieng » hoc hien
tieng han » tieng anh
cua nhung » va nhung
cong san » cong tac
toan cau » toan ban, toan tap, toan tai
toan cao » toan ban, toan tap

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

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