Perhaps you should try some spelling variations:
"dong java java snippets" » "dong va java snippets"
"nang phan co snippets" » "nang phat co snippets", "nang thanh co snippets", "nang quan co snippets", "nang phan bo snippets", "nang phan cong snippets", "nang phan cac 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: (((("dong java java snippets") or ("nang phan co snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong java java snippets") OR ("nang phan co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong java java snippets ) or ( nang phan co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong java java snippets") or ("nang phan co snippets"))) or ("locating bug code snippets"))*.