Perhaps you should try some spelling variations:
"dong pham cuc snippets" » "cong pham cuc snippets", "dong pha cuc snippets", "dong phan cuc snippets", "dong pham chuc snippets", "dong pham duc snippets", "dong pham cua snippets"
"dung java java snippets" » "dung va java 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 pham cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong pham cuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong pham cuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong pham cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.