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