Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cong ngang » cong nhan, cong quang, cong lang
ngang toan » nganh toan, dang toan, quang toan
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cac tinh » dac tinh, cuu tinh, ha tinh
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 ((cac tinh) or (may tinh)) - canh tranh cua nhung cong ngang toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((cac tinh) OR (may tinh)) - canh tranh cua nhung cong ngang toan ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((cac tinh) or (may tinh)) - canh tranh cua nhung cong ngang toan ban*.