Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
hanh trinh » canh tranh, hanh chinh
doi chinh » do chinh, tai chinh, hoc chinh
van thanh » van tuan
ban thanh » ban hanh, ban hang
trinh va » trinh van, trinh vat, trinh ve
dan than » dan chan, ban than, van than

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chinh sach - hanh trinh va nhung phuong ((dan than) OR (((van thanh) OR (ban thanh)))) ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chinh sach - hanh trinh va nhung phuong ((dan than) or (((van thanh) OR (ban thanh)))) ban~".
• Adding a wildcard symbol may retrieve word variants: doi chinh sach - hanh trinh va nhung phuong ((dan than) or (((van thanh) OR (ban thanh)))) ban*.