Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao doan do snippets" » "dao doanh do snippets", "dao dan do snippets", "dao hoan do snippets", "dao doan o snippets", "dao toan do snippets", "dao doanh dao 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 doan 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: (((("dao doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.