Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan bi so snippets" » "phan bi so snippets", "than bi so snippets", "nhan biet so snippets", "nhan bai so snippets", "nhan li so snippets", "nhan bo so 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 bi so 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 bi so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan bi so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan bi so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.