Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den phai con snippets" » "dien phan con snippets", "dien phap con snippets", "dan phan con snippets", "den phai co snippets", "den hai con snippets", "den phau con 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: (((("den phai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den phai con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den phai con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den phai con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.