Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can tao cao snippets" » "cau tao cao snippets", "can tho cao snippets", "cai tao cao snippets", "can bao cao snippets", "can toan cao 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: (((("can tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can tao cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can tao cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can tao cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.