Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung hat doi snippets" » "dung chat doi snippets", "dung nhat doi snippets", "dung phat doi snippets", "dung hoat doi snippets", "dung thay doi snippets", "dung hang doi 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 hat doi 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 hat doi snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung hat doi snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung hat doi snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.