Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cao phan cao snippets" » "cao phan code snippets", "co phan cao snippets", "cho phan cao snippets", "cac phan cao snippets", "cao phan cac snippets", "cao phan co snippets", "cao phan cau 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 phan cao 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 phan cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cao phan cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao phan cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.