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