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