Perhaps you should try some spelling variations:
"dung loai cach snippets" » "dung loai code snippets", "dung lai cach snippets", "dang loai cach snippets", "dung hoai cach snippets", "dung loi cach snippets", "dung loai sach snippets", "dung cai 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: (((("dung loai 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: (((("dung loai cach snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung loai cach snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung loai cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.