Perhaps you should try some spelling variations:
"dang tran trong snippets" » "dang gian trong snippets", "dang quan trong snippets", "dang thanh trong snippets", "quang tran trong snippets", "hoang tran trong snippets"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets"
"locating bug code slippers" » "locating bung code slippers", "locating bugs code slippers"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("dang tran trong snippets"))) OR ("locating bug code slippers"))~.
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dang tran trong snippets ))) or ( locating bug code slippers ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dang tran trong snippets"))) or ("locating bug code slippers"))*.