Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong lap doc snippets" » "cong luan doc snippets", "cong lang doc snippets", "cong tac doc snippets", "cong lap doi snippets", "cong lap dong snippets", "cong phap doc snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

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