Perhaps you should try some spelling variations:
"trinh toan phap slippers" » "tinh toan phap slippers", "thanh toan phap slippers", "trinh han phap slippers", "trinh toan phan slippers", "trinh toan phai slippers", "trinh toan tap slippers", "trinh toan phap slippery", "trinh toan phap grippers"
"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: (((("dung java java snippets") or ("trinh toan phap slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trinh toan phap slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trinh toan phap slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trinh toan phap slippers"))) or ("locating bug code snippets"))*.