Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan thu da snippets" » "doanh thu da snippets", "doan thuc da snippets", "doan thi da snippets", "doan thu dac snippets", "doan thu dai snippets", "doan thu dau 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: (((("doan thu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan thu da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan thu da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan thu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.