Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van dinh cac snippets" » "van minh cac snippets", "van dich cac snippets", "va dinh cac snippets", "van tinh cach snippets", "van dinh chuc snippets", "van dinh chau 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: (((("van dinh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van dinh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dinh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dinh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.