Perhaps you should try some spelling variations:
"cuong anh hoc snippets" » "cuong danh hoc snippets", "vuong anh hoc snippets", "duong anh hoc snippets", "cuong sinh hoc snippets", "cuong benh hoc snippets", "cuong hinh hoc snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "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 anh hoc 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 anh hoc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong anh hoc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong anh hoc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.