Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao cong chu snippets" » "cac cong chu snippets", "cao dang chu snippets", "cua cong chu snippets", "cao cong chuc snippets", "cao cong chua snippets", "cao cong cu 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 cong chu 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 cong chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao cong chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao cong chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.