Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chinh tau » chinh tai, chinh cau, chinh tu
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
cong san » cong tac
chinh ta » chinh tai, chinh va, chinh tri
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: ((ho chieu) or (doi chi)) sach - canh tranh va nhung cong san ((chinh ta) or (chinh tau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chi)) sach - canh tranh va nhung cong san ((chinh ta) OR (chinh tau)).
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chi)) sach - canh tranh va nhung cong san ((chinh ta) or (chinh tau))*.