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