Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"dung van chi snippets" » "duong van chi snippets", "dung va chi snippets", "dang van chi snippets", "dung van chien snippets", "dung luan chi snippets", "dung van chat 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 van chi 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 van chi snippets") OR ("luong java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung van chi snippets ) or ( luong java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung van chi snippets") or ("luong java java snippets"))) or ("locating bug code snippets"))*.