Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van ke doc snippets" » "van ket doc snippets", "van de doc snippets", "van ky doc snippets", "van ke do snippets", "van me doc snippets", "van ke doi 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 ke 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: (((("van ke doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van ke doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van ke doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.