Perhaps you should try some spelling variations:
"nguyen nhanh quoc." » "nguyen thanh quoc." (Expand Search), "nguyen khanh quoc." (Expand Search), "nguyen nhan quoc." (Expand Search), "nguyen nhanh thuoc." (Expand Search), "nguyen nhap quoc." (Expand Search), "nguyen nkhach quoc." (Expand Search), "nguyen nchinh quoc." (Expand Search), "nguyen ndoanh quoc." (Expand Search)
"nguyen hanh quoc." » "nguyen thanh quoc." (Expand Search), "nguyen khanh quoc." (Expand Search), "nguyen anh quoc." (Expand Search), "nguyen phanh quoc." (Expand Search), "nguyen nhanh quoc." (Expand Search), "nguyen hangh quoc." (Expand Search), "nguyen khach quoc." (Expand Search), "nguyen chinh quoc." (Expand Search), "nguyen doanh quoc." (Expand Search)
"nguyen han quoc." » "nguyen phan quoc." (Expand Search), "nguyen nhan quoc." (Expand Search), "nguyen hang quoc." (Expand Search), "nguyen tran quoc." (Expand Search), "nguyen nhap quoc." (Expand Search), "nguyen hoc quoc." (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: (("nguyen han quoc.") OR ((("nguyen hanh quoc.") OR ("nguyen nhanh quoc."))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"nguyen han quoc.\") OR (((\"nguyen hanh quoc.\") OR (\"nguyen nhanh quoc.\"))))".
• Removing quotes may allow a broader search: (( nguyen han quoc. ) OR ((( nguyen hanh quoc. ) OR ( nguyen nhanh quoc. )))).
• Adding a wildcard symbol may retrieve word variants: (("nguyen han quoc.") OR ((("nguyen hanh quoc.") OR ("nguyen nhanh quoc."))))*.