Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lich tu cach snippets" » "lich su cach snippets", "dich tu cach snippets", "linh tu cach snippets", "lich tu 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: (((("lich tu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lich tu cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lich tu cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lich tu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.