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