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