Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan chan cua snippets" » "dan gian cua snippets", "dan ca cua snippets", "van chat cua snippets", "dan nhan cua snippets", "dan chat cua snippets", "dan than cua 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: (((("dan chan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan chan cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan chan cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan chan cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.