Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"cong cau code snippets" » "cong cu code snippets", "cong chuc code snippets", "thong cau code snippets", "cong cau cong snippets", "cong cau de snippets", "cong cfd code 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: (((("cong cau 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: (((("cong cau code snippets") OR ("luong java java snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( cong cau code snippets ) or ( luong java java snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cau code snippets") or ("luong java java snippets"))) or ("locating bug code slippers"))*.