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