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