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