Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong cac chap snippets" » "duong cac chap snippets", "dong bac chap snippets", "dung cac chap snippets", "dong cac chat snippets", "dong cac cap snippets", "dong cau chap 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: (((("dong cac chap snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong cac chap snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cac chap snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cac chap snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.