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