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