Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong gi he snippets" » "cuong giao he snippets", "cuong nghi he snippets", "luong gia he snippets", "cuong gi de snippets", "cuong gi ve snippets", "cuong vi 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: (((("cuong gi 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: (((("cuong gi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong gi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.