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