Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao moi he snippets" » "dai moi he snippets", "do moi he snippets", "dao noi he snippets", "dao moi ve snippets", "dao moi ke snippets", "dao moi de 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 he 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 he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao moi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao moi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.