Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan cua son snippets" » "nhat cua son snippets", "nhan luc son snippets", "nhan su son snippets", "nhan cua song snippets", "nhan cua san snippets", "nhan cua con 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 son 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 son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan cua son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan cua son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.