Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong toan cho snippets" » "cong toan code snippets", "cong tan cho snippets", "cong hoan cho snippets", "cong tuan cho snippets", "cong toan cao snippets", "cong toan chi snippets", "cong toan ho snippets"
"dung java java snippets" » "dung va java 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: (((("cong toan cho snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong toan cho snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong toan cho snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong toan cho snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.