Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi cau cua snippets" » "phi dau cua snippets", "pha cau cua snippets", "phan cau cua snippets", "phi cau qua snippets", "phi ca cua snippets", "phi cu cua 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: (((("phi cau cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phi cau cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi cau cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi cau cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.