Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung anh cong snippets" » "dung danh cong snippets", "duong anh cong snippets", "dong anh cong snippets", "dung hanh cong snippets", "dung anh dong snippets", "dung thanh 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 anh 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 anh cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung anh cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung anh cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.