Perhaps you should try some spelling variations:
"dung sinh a snippets" » "duong sinh a snippets", "dang sinh a snippets", "dung ninh a snippets", "dung sinh va snippets", "dung sinh ma snippets", "dung sinh xa snippets", "dung sinh a slippers"
"ngu java java snippets" » "ngu va java snippets", "ngu java java 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: (((("ngu java java snippets") or ("dung sinh a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngu java java snippets") OR ("dung sinh a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu java java snippets ) or ( dung sinh a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu java java snippets") or ("dung sinh a snippets"))) or ("locating bug code snippets"))*.