Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kien van do snippets" » "dien van do snippets", "kien va do snippets", "kieu van do snippets", "kien van dao snippets", "kien van de snippets", "kien van du 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: (((("kien van 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: (((("kien van do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kien van do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kien van do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.