Perhaps you should try some spelling variations:
"nhan vat hoc chinh tri vien." » "nhan vat hoa chinh tri vien." (Expand Search), "nhan vat hoc chinh tai vien." (Expand Search), "nhan vat hoc chinh tri viet." (Expand Search), "nhan vat hoc chinh tri kien." (Expand Search), "nhan phat hoc chinh tri vien." (Expand Search), "nhan luat hoc chinh tri vien." (Expand Search)
"phan vat cua chinh tri vien." » "phan vat luan chinh tri vien." (Expand Search), "phan vat cua chinh tai vien." (Expand Search), "phan vat cua chinh tri viet." (Expand Search), "phan vat cua chinh tri kien." (Expand Search), "phan van cua chinh tri vien." (Expand Search), "phan va cua chinh tri vien." (Expand Search), "phan vao cua chinh tri vien." (Expand Search), "phan vat chat chinh tri 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 hoc chinh tri vien.") OR ("phan vat cua chinh tri vien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nhan vat hoc chinh tri vien.\") OR (\"phan vat cua chinh tri vien.\"))".
• Removing quotes may allow a broader search: (( nhan vat hoc chinh tri vien. ) OR ( phan vat cua chinh tri vien. )).
• Adding a wildcard symbol may retrieve word variants: (("nhan vat hoc chinh tri vien.") OR ("phan vat cua chinh tri vien."))*.