Perhaps you should try some spelling variations:
"van hanh tranh snippets" » "van canh tranh snippets", "van hanh trinh snippets", "van hanh trang snippets", "van thanh tranh snippets", "ban hanh tranh snippets", "van anh tranh snippets", "van hanh tranh 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: (((("van hanh tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hanh tranh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hanh tranh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hanh tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.