Perhaps you should try some spelling variations:
"dong tinh chiu snippets" » "dong kinh chiu snippets", "dong tin chiu snippets", "cong tinh chiu snippets", "dong trinh chiu snippets", "dong hinh chieu snippets", "dong tinh chat 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 tinh chiu 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 tinh chiu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tinh chiu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tinh chiu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.