Perhaps you should try some spelling variations:
"tinh toan hanh snippets" » "tinh toan thanh snippets", "tinh toan anh snippets", "tinh tran hanh snippets", "trinh toan hanh snippets", "dinh toan hanh snippets", "minh toan hanh snippets", "tinh toan hanh 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 toan hanh 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 toan hanh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh toan hanh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh toan hanh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.