Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao moi cong snippets" » "dao noi cong snippets", "dao voi cong snippets", "dao tai cong snippets", "dai moi cong snippets", "do moi cong 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: (((("dao moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao moi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao moi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao moi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.