Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen cong mot snippets" » "neon cong mot snippets", "nien cong mot snippets", "nen mong mot snippets", "nen cong dot snippets", "nen trong mot snippets", "nen cong mong 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: (((("nen cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen cong mot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen cong mot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen cong mot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.