Perhaps you should try some spelling variations:
"ataur rahman khoa kham" » "abdul rahman khoa kham", "ur rahman khoa kham", "ataur rahman kho khan", "ataur rahman khoa than"
"ataur rahman khoan phai" » "abdul rahman khoan phai", "ur rahman khoan phai", "ataur rahman khong phai", "ataur rahman khoa phau", "ataur rahman khoan hoi"
"saifur rahman khoa kham" » "saifur rahman kho khan", "saifur rahman khoa than"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("ataur rahman khoa kham") OR ("saifur rahman khoa kham"))) or ("ataur rahman khoan phai"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ataur rahman khoa kham") OR ("saifur rahman khoa kham"))) OR ("ataur rahman khoan phai"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ataur rahman khoa kham\") OR (\"saifur rahman khoa kham\"))) or (\"ataur rahman khoan phai\"))*".
• Removing quotes may allow a broader search: (((( ataur rahman khoa kham ) OR ( saifur rahman khoa kham ))) or ( ataur rahman khoan phai ))*.