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