Perhaps you should try some spelling variations:
"dang quang java snippets" » "dung quang java snippets", "nang quan java snippets", "dang hung java snippets", "dang quang va snippets", "dang quang java slippers"
"using _ code snippets" » "using _ code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("using _ code snippets") or ("dang quang java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using _ code snippets") OR ("dang quang java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using _ code snippets ) or ( dang quang java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using _ code snippets") or ("dang quang java snippets"))) or ("locating bug code snippets"))*.