Perhaps you should try some spelling variations:
"sinh vien data snippets" » "sinh vien dai snippets", "sinh vien da snippets", "sinh viec dat snippets", "dinh vien data snippets", "minh vien data snippets", "kinh vien data snippets", "sinh vien data slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("sinh vien data snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("sinh vien data snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( sinh vien data snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("sinh vien data snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.