Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu ke do snippets" » "hieu kem do snippets", "chieu ke do snippets", "hieu ky do snippets", "hieu ke o snippets", "hieu ke co snippets", "hieu ke mo 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: (((("hieu ke do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu ke do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu ke do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu ke do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.