Perhaps you should try some spelling variations:
"thong cach ca snippets" » "phong cach ca snippets", "thong cac ca snippets", "trong cach ca snippets", "thong cach cua snippets", "thong cach ta snippets", "thong cach pha 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: (((("thong cach ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong cach ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong cach ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong cach ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.