Perhaps you should try some spelling variations:
"dung trinh minh slippers" » "dung tinh minh slippers", "dong trinh minh slippers", "cong trinh minh slippers", "dung trinh kinh slippers", "dung trinh dinh slippers", "dung trinh sinh slippers", "dung trinh minh slippery", "dung trinh minh 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 trinh minh 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 trinh minh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using c code snippets ) or ( dung trinh minh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using c code snippets") or ("dung trinh minh slippers"))) or ("locating bug code snippets"))*.