Perhaps you should try some spelling variations:
"dung quang data slippers" » "dang quang data slippers", "luong quang data slippers", "dung luan data slippers", "dung quang dai slippers", "dung quang dam slippers", "dung quang dang slippers", "dung quang data slippery", "dung quang data grippers"
"anh java java snippets" » "anh 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: (((("anh java java snippets") or ("dung quang data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh java java snippets") OR ("dung quang data slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh java java snippets ) or ( dung quang data slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh java java snippets") or ("dung quang data slippers"))) or ("locating bug code snippets"))*.