Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung phu can snippets" » "dung phan can snippets", "dung cho can snippets", "dung he can snippets", "dung phu san snippets", "dung pho can snippets", "dung thu canh 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: (((("dung phu can snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung phu can snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung phu can snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung phu can snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.