Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan gia cua snippets" » "khan gia cua snippets", "phan gia cua snippets", "phan giai cua snippets", "nhan gian cua snippets", "nhan giau cua snippets", "nhan gia cuc 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: (((("nhan gia 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: (((("nhan gia cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan gia cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan gia cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.