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