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