Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan khai de snippets" » "dang khai de snippets", "van khai de snippets", "dang khoi de snippets", "dan khi de snippets", "dan khoi de snippets", "dan thai den 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: (((("dan khai 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: (((("dan khai de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan khai de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan khai de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.