Perhaps you should try some spelling variations:
"dung qua cham snippets" » "dung qua code snippets", "duong qua cham snippets", "dung quan cham snippets", "dung cua cham snippets", "dung qua hai snippets", "dung qua cac snippets", "dung va cham 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 qua cham 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 qua cham snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung qua cham snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung qua cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.