Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong thi hoan snippets" » "cong thai hoan snippets", "cong khi hoan snippets", "dong thi hoan snippets", "cong thi hoa snippets", "cong thi hanh snippets", "cong thi hong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 thi hoan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong thi hoan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong thi hoan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong thi hoan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.