Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"cong cho code slippers" » "dong cho code slippers", "cong co code slippers", "rong cho code slippers", "cong cho cong slippers", "cong cfd code slippers", "cong cho con slippers"
"locating bug code snippets" » "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: (((("luong java java snippets") or ("cong cho code slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("cong cho code slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( cong cho code slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("cong cho code slippers"))) or ("locating bug code snippets"))*.