Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"doi va ruan snippets" » "doi van ruan snippets", "doi va quan snippets", "doi va huan snippets", "hoi va ruan snippets", "noi va ruan snippets", "dai va ruan snippets", "doi va ruan slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"doi va ruan snippets\") OR (\"python using java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( doi va ruan snippets ) OR ( python using java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi va ruan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets"))*.