Perhaps you should try some spelling variations:
"dung thi tran slippers" » "dung tai tran slippers", "dung tri tran slippers", "dung chi tran slippers", "dung thi trang slippers", "dung thi thanh slippers", "dung thi lan slippers", "dung thi tran slippery", "dung thi tran 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 thi tran 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 thi tran slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dung thi tran slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dung thi tran slippers"))) or ("locating bug code snippets"))*.