Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"pham cua cao snippets" » "pham cua code snippets", "pham ca cao snippets", "phat cua cao snippets", "ham cua cao snippets", "pham cua cac snippets", "pham cu cao snippets", "pham cua cay 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: (((("pham cua 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: (((("pham cua cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( pham cua cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham cua cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.