Perhaps you should try some spelling variations:
"dung cac sinh slippers" » "luong cac sinh slippers", "dung cho sinh slippers", "dung tai sinh slippers", "dung cac tinh slippers", "dung cac dinh slippers", "dung cac hinh slippers", "dung cac sinh slippery", "dung cac sinh grippers"
"using c code snippets" » "using lc code snippets", "using a code snippets", "using _ code snippets", "using cfd code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using c code snippets") or ("dung cac sinh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using c code snippets") OR ("dung cac sinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dung cac sinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dung cac sinh slippers"))) or ("locating bug code snippets"))*.