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