Perhaps you should try some spelling variations:
"dung dung du snippets" » "duong dung du snippets", "ung dung du snippets", "dung ung du snippets", "dung deng du snippets", "dung cung du snippets", "dung cuang du snippets"
"hang va java snippets" » "hang java java snippets", "nang va java snippets", "dang va java snippets", "hanh va java 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: (((("hang va java snippets") or ("dung dung du snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang va java snippets") OR ("dung dung du snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang va java snippets ) or ( dung dung du snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang va java snippets") or ("dung dung du snippets"))) or ("locating bug code snippets"))*.