Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap nghe cnc snippets" » "cap nghe cnc snippets", "day nghe cnc snippets", "da nghe cnc snippets", "dap nghe cong snippets", "dap nghe che snippets", "dap nghe co 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: (((("dap nghe cnc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dap nghe cnc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap nghe cnc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap nghe cnc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.