Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap nam he snippets" » "dan nam he snippets", "dao nam he snippets", "dai nam he snippets", "dap nam ha snippets", "dap nam hien snippets", "dap nam nghe 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 nam 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: (((("dap nam he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap nam he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap nam he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.