Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap su hoan snippets" » "dap su han snippets", "dap vu hoan snippets", "dap thu hoan snippets", "dan su hoan snippets", "da su hoan snippets", "dap so hoan 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 su hoan 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 su hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap su hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap su hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.