Perhaps you should try some spelling variations:
"dung phuc cua snippets" » "duong phuc cua snippets", "dung phu cua snippets", "dong phuc cua snippets", "dung thuc cua snippets", "dung hoc cua snippets", "dung phuc vu snippets"
"dung java java snippets" » "dung va java 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 phuc cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phuc cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phuc cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phuc cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.