Perhaps you should try some spelling variations:
"duoc cach cac snippets" » "cuoc cach cac snippets", "duoc cac cac snippets", "truoc cach cac snippets", "duoc ca cac snippets", "duoc tich cac snippets", "duoc sach cap 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: (((("duoc cach 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: (((("duoc cach cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc cach cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc cach cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.