Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"dong chen cac snippets" » "dong chan cac snippets", "dong che cac snippets", "dong chuyen cac snippets", "dong chon cac snippets", "dong chen gach snippets", "dong thien cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"luong java java snippets\") OR (\"dong chen cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( luong java java snippets ) OR ( dong chen cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") OR ("dong chen cac snippets"))) OR ("locating bug code snippets"))*.