Perhaps you should try some spelling variations:
"cuong tap trinh snippets" » "luong tap trinh snippets", "cong tac trinh snippets", "luong tai trinh snippets", "cuong lap trinh snippets", "cuong tap tinh snippets", "cuong tao trinh snippets", "cuong tap trinh slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cuong tap trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuong tap trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong tap trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong tap trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.