Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap dan dong snippets" » "dap van dong snippets", "dap dan dung snippets", "dap dao dong snippets", "dao dan dong snippets", "dap tan dong snippets", "day dan dong 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 dan dong 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 dan dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap dan dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap dan dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.