Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan mot con snippets" » "nhan mo con snippets", "han mot con snippets", "nhan dot con snippets", "nhan mot cong snippets", "nhan mot co snippets", "nhan moi 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 mot con 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 mot con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan mot con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan mot con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.