Perhaps you should try some spelling variations:
"dinh thuc cach snippets" » "dinh thuy cach snippets", "dinh chuc cach snippets", "sinh thuc cach snippets", "dinh thuoc sach snippets", "dinh truoc cach snippets", "dinh thuc hanh 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: (((("dinh thuc cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dinh thuc cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dinh thuc cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh thuc cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.