Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tich du can snippets" » "tich duy can snippets", "tich su can snippets", "tich tu can snippets", "tinh du can snippets", "dich du can 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: (((("tich du can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tich du can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tich du can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tich du can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.