Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xoa van cau snippets" » "hoa van cau snippets", "xa van cau snippets", "doan van cau snippets", "xoa van dau snippets", "xoa van hau snippets", "xoa van chat 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: (((("xoa van 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: (((("xoa van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xoa van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xoa van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.