Perhaps you should try some spelling variations:
"dung sinh java snippets" » "duong sinh java snippets", "dang sinh java snippets", "dung ninh java snippets", "dung trinh java snippets", "dung using java snippets", "dung sinh va snippets"
"cong gi de snippets" » "cong goi de snippets", "cong li de snippets", "cong ti de snippets", "cong gia de snippets", "cong ga de snippets", "cong gi he 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: (((("dung sinh java snippets") or ("cong gi de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sinh java snippets") OR ("cong gi de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sinh java snippets ) or ( cong gi de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sinh java snippets") or ("cong gi de snippets"))) or ("locating bug code snippets"))*.