Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
doi chieu » doc hieu, ho chieu, mot chieu
tranh cua » doanh cua, manh cua
dung cong » dung trong
dan chinh » dang chinh, lan chinh, van chinh
chinh ca » chinh ta, chinh va, chinh tai
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doi chi)) sach - canh tranh cua ((nhung cong) or (dung cong)) dan chinh ca~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doi chi)) sach - canh tranh cua ((nhung cong) OR (dung cong)) dan chinh ca.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doi chi)) sach - canh tranh cua ((nhung cong) or (dung cong)) dan chinh ca*.