Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hieu nam da snippets" » "khieu nai da snippets", "trieu nam da snippets", "hieu nhat da snippets", "hieu nam dan snippets", "hieu nam a snippets", "hieu nam 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: (((("hieu nam da 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 nam da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu nam da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu nam da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.