Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dang thi doan snippets" » "hoang thi doan snippets", "dang khoi doan snippets", "dang thai doan snippets", "dang thi hoan snippets", "dang thi loan 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: (((("dang thi doan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang thi doan snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang thi doan snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang thi doan snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.