Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets"
"trong doi can snippets" » "trong doi canh snippets", "trong doi ban snippets", "trong voi can 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 (\"trong doi can snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( luong java java snippets ) OR ( trong doi can snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") OR ("trong doi can snippets"))) OR ("locating bug code snippets"))*.