Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhan doan da snippets" » "chan doan da snippets", "nhan dan da snippets", "nhuan doanh da snippets", "nhan doan dau snippets", "nhan doan va 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 doan 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: (((("nhan doan da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhan doan da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhan doan da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.