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