Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khuc hat he snippets" » "khac hau he snippets", "thuc ha he snippets", "khuc hat de snippets", "khuc hat ke snippets", "khuc hat le 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: (((("khuc hat he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khuc hat he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuc hat he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuc hat he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.