Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam khoo he snippets" » "adam khoo he snippets", "da khoa he snippets", "nam khoa he snippets", "dam khoa he snippets", "dam khoi he snippets", "dam khong he 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: (((("dam khoo 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: (((("dam khoo he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam khoo he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam khoo he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.