Perhaps you should try some spelling variations:
"tat thong cac snippets" » "tat thuong cac snippets", "tat thang cac snippets", "mat thong cac snippets", "tat trong cac snippets", "tat phong cach snippets", "tat thong cua 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: (((("tat thong 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: (((("tat thong cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tat thong cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tat thong cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.