Perhaps you should try some spelling variations:
"trong dua hanh snippets" » "trong duan hanh snippets", "trong qua hanh snippets", "trong cua hanh snippets", "trong du hanh snippets", "trong duc hanh snippets", "trong da hanh snippets", "trong dua 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: (((("trong dua 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: (((("trong dua hanh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong dua hanh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong dua hanh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.