Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhe cao so snippets" » "nghe cao so snippets", "nha cao so snippets", "he cao so snippets", "nhe cao son snippets", "nhe co so snippets", "nhe cao su 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: (((("nhe cao 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: (((("nhe cao so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhe cao so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhe cao so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.