Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong dau do snippets" » "cong dau do snippets", "cuong dao do snippets", "cuong danh do snippets", "cuong cau do snippets", "cuong dau co 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 dau 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: (((("cuong dau do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong dau do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong dau do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.