Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi de con snippets" » "khi de con snippets", "khoa de con snippets", "khoi he con snippets", "khoi de co snippets", "khoi du con snippets", "khoi le 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: (((("khoi de 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: (((("khoi de con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi de con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi de con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.