Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"dung cac hoc snippets" » "luong cac hoc snippets", "dung cho hoc snippets", "dung tai hoc snippets", "dung cach hoc snippets", "dung cac hop snippets", "dung bac hoc 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 cac hoc 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 cac hoc snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac hoc snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac hoc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.