Perhaps you should try some spelling variations:
"giao doc trinh snippets" » "giao doc tinh snippets", "giao doi trinh snippets", "giao hoc trinh snippets", "giao duc trinh snippets", "giam doc trinh snippets", "gian doc trinh snippets", "giao doc 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: (((("giao doc 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: (((("giao doc trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giao doc trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giao doc trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.