Perhaps you should try some spelling variations:
"dong dinh cua snippets" » "dong kinh cua snippets", "dang dinh cua snippets", "dong ninh cua snippets", "dong dinh cuu snippets", "dong sinh cua snippets", "dong dinh cu 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 dinh 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: (((("dong dinh cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dinh cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dinh cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.