Perhaps you should try some spelling variations:
"nhan vat so chinh tri vien." » "nhan vat do chinh tri vien." (Expand Search), "nhan vat hoa chinh tri vien." (Expand Search), "nhan vat hoc chinh tri vien." (Expand Search), "nhan vat so chinh tai vien." (Expand Search), "nhan vat so chinh tri viet." (Expand Search), "nhan vat so chinh tri chien." (Expand Search), "nhan vat o chinh tri vien." (Expand Search), "nhan vat co chinh tri vien." (Expand Search), "phan vat so chinh tri vien." (Expand Search)
"nhan vat tu chinh tri kien." » "nhan vat te chinh tri kien." (Expand Search), "nhan vat su chinh tri kien." (Expand Search), "nhan vat tai chinh tri kien." (Expand Search), "nhan vat tu chinh trien kien." (Expand Search), "nhan vat tu chinh tri kinh." (Expand Search), "nhan bat tu chinh tri kien." (Expand Search), "nhan vat tieu chinh tri kien." (Expand Search), "phan vat tu chinh tri kien." (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 so chinh tri vien.") OR ("nhan vat tu chinh tri kien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nhan vat so chinh tri vien.\") OR (\"nhan vat tu chinh tri kien.\"))".
• Removing quotes may allow a broader search: (( nhan vat so chinh tri vien. ) OR ( nhan vat tu chinh tri kien. )).
• Adding a wildcard symbol may retrieve word variants: (("nhan vat so chinh tri vien.") OR ("nhan vat tu chinh tri kien."))*.