Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khan dam do snippets" » "thanh dam do snippets", "chang dam do snippets", "khanh nam do snippets", "khan dao do snippets", "khan nam do snippets", "khan dam da 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: (((("khan dam 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: (((("khan dam do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khan dam do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khan dam do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.