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