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