Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using lc code snippets" » "using c code snippets", "using l code snippets", "using low code snippets", "using lbm code snippets"
"dung lua cua snippets" » "dung luan cua snippets", "dung luat cua snippets", "dung cua cua snippets", "dung qua cua snippets", "dung xua cua 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: "((((\"using lc code snippets\") OR (\"dung lua cua snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using lc code snippets ) OR ( dung lua cua snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using lc code snippets") OR ("dung lua cua snippets"))) OR ("locating bugs code snippets"))*.