Perhaps you should try some spelling variations:
"dinh chon cac snippets" » "dinh cuong cac snippets", "dinh phong cac snippets", "dinh chinh cac snippets", "dinh cho cac snippets", "dinh thong cac snippets", "dinh hoc cac 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 chon cac 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 chon cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dinh chon cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dinh chon cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.