Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc tan hoc snippets" » "hoc dan hoc snippets", "hoc tap hoc snippets", "hoc tai hoc snippets", "hoc toan hoc snippets", "hoc than hoc snippets", "hoc van hoc 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: (((("hoc tan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc tan hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc tan hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc tan hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.