Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mat phap hoc snippets" » "luat phap hoc snippets", "mang phap hoc snippets", "ban phap hoc snippets", "mat phap hoan snippets", "mat phap mo snippets", "mat phap han 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: (((("mat phap 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: (((("mat phap hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mat phap hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mat phap hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.