Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong luat cac snippets" » "cong luat code snippets", "cong suat cac snippets", "cong luan cac snippets", "cuong luan cac snippets", "cong luat can snippets", "cong luat cau snippets", "cong xuat cac 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 luat cac 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 luat cac snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong luat cac snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong luat cac snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.