Perhaps you should try some spelling variations:
"nhan vat nu chinh tri kien." » "nhan vat su chinh tri kien." (Expand Search), "nhan vat tu chinh tri kien." (Expand Search), "nhan vat cua chinh tri kien." (Expand Search), "nhan vat nu chinh trien kien." (Expand Search), "nhan vat nu chinh tri kinh." (Expand Search), "nhan vat xu chinh tri kien." (Expand Search), "phan vat nu chinh tri kien." (Expand Search)
"nhan vat nu chinh ta vien." » "nhan vat su chinh ta vien." (Expand Search), "nhan vat tu chinh ta vien." (Expand Search), "nhan vat cua chinh ta vien." (Expand Search), "nhan vat nu chinh nha vien." (Expand Search), "nhan vat nu chinh tai vien." (Expand Search), "nhan vat nu chinh tan vien." (Expand Search), "nhan vat nu chinh ta hien." (Expand Search), "nhan vat xu chinh ta vien." (Expand Search), "phan vat nu chinh ta vien." (Expand Search)

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("nhan vat nu chinh tri kien.") OR ("nhan vat nu chinh ta vien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nhan vat nu chinh tri kien.\") OR (\"nhan vat nu chinh ta vien.\"))".
• Removing quotes may allow a broader search: (( nhan vat nu chinh tri kien. ) OR ( nhan vat nu chinh ta vien. )).
• Adding a wildcard symbol may retrieve word variants: (("nhan vat nu chinh tri kien.") OR ("nhan vat nu chinh ta vien."))*.