Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dieu hat do snippets" » "dieu hanh do snippets", "dieu khac do snippets", "dieu can do snippets", "dieu hat doi snippets", "dieu hat dao snippets", "dieu hat de 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: (((("dieu hat 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: (((("dieu hat do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dieu hat do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dieu hat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.