Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngan den cac snippets" » "nga den cac snippets", "nganh dien cac snippets", "ngan danh cac snippets", "ngan dien cac snippets", "ngan dan cac snippets", "ngan de cac 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: (((("ngan den cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngan den cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngan den cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngan den cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.