Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan muc he snippets" » "nhan luc he snippets", "nham muc he snippets", "nhan mac he snippets", "nhan muc ke snippets", "nhan mua he 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 muc he 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 muc he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan muc he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan muc he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.