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