Perhaps you should try some spelling variations:
"hoc trong code snippets" » "hoc trong cong snippets", "hoc trong co snippets", "hoc trong che snippets", "hoc thuong code snippets", "hoc tieng code snippets", "dot trong code snippets", "hoc trong code slippers"
"using lc code snippets" » "using c code snippets", "using l code snippets", "using low code snippets", "using lbm code snippets", "using lc code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 (\"hoc trong code snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( using lc code snippets ) OR ( hoc trong code snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using lc code snippets") OR ("hoc trong code snippets"))) OR ("locating bug code snippets"))*.