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