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