Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dac biet cua snippets" » "khac biet cua snippets", "dac diem cua snippets", "can biet cua snippets", "dac bieu cua snippets", "dac bien cua snippets", "dac biet giua 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: (((("dac biet cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dac biet cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dac biet cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dac biet cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.