Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"dang vat code snippets" » "dang van code snippets", "dong vat code snippets", "dang nhat code snippets", "dang rate code snippets", "dang vat co snippets", "dang vat de snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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