Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong lang » cong vang, cong luong, cong quang
lang toan » dang toan, lang thang, lang thanh
hoc hieu » hoc thieu, doc hieu, hoc dieu
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 hieu) OR (hoc hien)) manh - canh tranh cua nhung cong lang toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc hieu) OR (hoc hien)) manh - canh tranh cua nhung cong lang toan ban".
• Adding a wildcard symbol may retrieve word variants: ((hoc hieu) OR (hoc hien)) manh - canh tranh cua nhung cong lang toan ban*.