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