Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung moi cong snippets" » "dung mo cong snippets", "dung doi cong snippets", "dung mot cong snippets", "dung noi cong snippets", "dung voi cong snippets", "dung tai cong 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 moi cong 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 moi cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung moi cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung moi cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.