Perhaps you should try some spelling variations:
"doi cong code snippets" » "doi cong cong snippets", "doi cong co snippets", "doi cong che snippets", "doi song code snippets", "noi cong code snippets", "moi cong code snippets"
"using a java snippets" » "using _ java snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using a java snippets") or ("doi cong code snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using a java snippets") OR ("doi cong code snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( using a java snippets ) or ( doi cong code snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("using a java snippets") or ("doi cong code snippets"))) or ("locating bug code slippers"))*.