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