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"
"dung cac he snippets" » "luong cac he snippets", "dung cho he snippets", "dung tai 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: (((("dang quang java snippets") or ("dung cac he snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang quang java snippets") OR ("dung cac he snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang quang java snippets ) or ( dung cac he snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang quang java snippets") or ("dung cac he snippets"))) or ("locating bug code snippets"))*.