Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi cua do snippets" » "hoi cua do snippets", "khi cua do snippets", "kho cua do snippets", "khoi cua dao snippets", "khoi cua bo snippets", "khoi cua co 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 cua do 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 cua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi cua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.