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