Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap chua cu snippets" » "phap chua cu snippets", "dap nha cu snippets", "ca chua cu snippets", "dap chua cau snippets", "dap cua cu snippets", "dap chua 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 chua cu 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 chua cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap chua cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap chua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.