Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
van thanh » ban thanh, van tuan
hoc hieu » hoc thieu, hoc hien, doc hieu

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 manh - canh tranh cua nhung cong ((manh toan) or (van thanh)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - canh tranh cua nhung cong ((manh toan) OR (van thanh)) cau.
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua nhung cong ((manh toan) or (van thanh)) cau*.