Perhaps you should try some spelling variations:
"tinh doi trinh snippets" » "tinh doc trinh snippets", "tinh doi tinh snippets", "tinh dong trinh snippets", "trinh doc trinh snippets", "trinh do trinh snippets", "tinh hoc trinh snippets", "tinh doi trinh 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: (((("tinh doi trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tinh doi trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh doi trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh doi trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.