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