Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den phi hoat snippets" » "den chi hoat snippets", "den thi hoa snippets", "den thi hoan snippets", "den phu hoat snippets", "dang phi hoat snippets", "den phja hoat 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 phi hoat 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 phi hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den phi hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den phi hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.