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