Perhaps you should try some spelling variations:
"cuon cai cach snippets" » "cuon cai code snippets", "cuong bai cach snippets", "cuong cac cach snippets", "cuong hai cach snippets", "cuon loi cach snippets", "cuon tai cac snippets", "cuon va cach snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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: (((("cuon cai cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon cai cach snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cuon cai cach snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon cai cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.