Perhaps you should try some spelling variations:
"nhan vat tu chinh tri viet." » "nhan vat te chinh tri viet." (Expand Search), "nhan vat su chinh tri viet." (Expand Search), "nhan vat tai chinh tri viet." (Expand Search), "nhan vat tu chinh thi viet." (Expand Search), "nhan vat tu chinh dai viet." (Expand Search), "nhan vat tu chinh hoi viet." (Expand Search), "nhan bat tu chinh tri viet." (Expand Search), "nhan vat tieu chinh tri viet." (Expand Search), "phan vat tu chinh tri viet." (Expand Search)
"nhan vat tu minh tai viet." » "nhan vat tu minh thao viet." (Expand Search), "nhan vat tu minh thu viet." (Expand Search), "nhan vat tu minh tai lieu." (Expand Search), "nhan vat thu minh tai viet." (Expand Search), "nhan vat vu minh tai viet." (Expand Search), "nhan vat tu kinh tai viet." (Expand Search), "nhan bat tu minh tai viet." (Expand Search), "nhan vat tieu minh tai viet." (Expand Search), "phan vat tu minh tai viet." (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 tu chinh tri viet.") OR ("nhan vat tu minh tai viet."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nhan vat tu chinh tri viet.\") OR (\"nhan vat tu minh tai viet.\"))".
• Removing quotes may allow a broader search: (( nhan vat tu chinh tri viet. ) OR ( nhan vat tu minh tai viet. )).
• Adding a wildcard symbol may retrieve word variants: (("nhan vat tu chinh tri viet.") OR ("nhan vat tu minh tai viet."))*.