Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, mot chieu
tranh cua » doanh cua, manh cua
cua nhung » va nhung
vang toan » dang toan, quang toan, vang trang
ho chieu » theo chieu, hoc thieu, mot chieu
van toan » van tuan, van tan, van thanh

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

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