Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao yan chen snippets" » "dao van chien snippets", "dao dan chan snippets", "dao han che snippets", "dao van chen snippets", "dao dan chen snippets", "dao hanh chen 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 yan chen 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 yan chen snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao yan chen snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao yan chen snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.