Perhaps you should try some spelling variations:
"nhan vat cua chinh tri vien." » "nhan vat luan chinh tri vien." (Expand Search), "nhan vat cua chinh tai vien." (Expand Search), "nhan vat cua chinh tri viet." (Expand Search), "nhan vat cua chinh tri kien." (Expand Search), "nhan vat chat chinh tri vien." (Expand Search), "phan vat cua chinh tri vien." (Expand Search)
"nhan vat nu minh tai lieu." » "nhan vat nu minh thao lieu." (Expand Search), "nhan vat nu minh thu lieu." (Expand Search), "nhan vat ngu minh tai lieu." (Expand Search), "nhan vat vu minh tai lieu." (Expand Search), "nhan vat u minh tai lieu." (Expand Search), "nhan vat tu minh tai lieu." (Expand Search), "nhan vat xu minh tai lieu." (Expand Search), "nhan vat su minh tai lieu." (Expand Search), "phan vat nu minh tai lieu." (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 minh tai lieu.") OR ("nhan vat cua chinh tri vien."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nhan vat nu minh tai lieu.\") OR (\"nhan vat cua chinh tri vien.\"))".
• Removing quotes may allow a broader search: (( nhan vat nu minh tai lieu. ) OR ( nhan vat cua chinh tri vien. )).
• Adding a wildcard symbol may retrieve word variants: (("nhan vat nu minh tai lieu.") OR ("nhan vat cua chinh tri vien."))*.