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