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