Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan dong he snippets" » "nhanh dong he snippets", "nhan dang he snippets", "phan dong he snippets", "nhan dong che snippets", "nhan dung he snippets", "nhan dong ha 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 dong he 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 dong he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan dong he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan dong he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.