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", "dung sinh java slippers"
"dong do thuc snippets" » "dong dao thuc snippets", "dong co thuc snippets", "dang do thuc snippets", "dong hoc thuc snippets", "dong dan thuc snippets", "dong do thuc slippers"
"locating bug code snippets" » "locating bug code slippers", "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 ("dong do thuc snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung sinh java snippets") OR ("dong do thuc snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung sinh java snippets ) or ( dong do thuc snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung sinh java snippets") or ("dong do thuc snippets"))) or ("locating bug code snippets"))*.