Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, truong thanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
hoc hieu » hoc thieu, hoc hien, doc hieu
cong san » cong tac
cong tan » cong tac, cong ty, cong ha
toan cau » toan cao, toan ban, toan tap
hieu ca » hieu cac, hieu cua, hieu va

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

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