Perhaps you should try some spelling variations:
"duong dao anh snippets" » "dong dao anh snippets", "luong dao anh snippets", "truong dao anh snippets", "duong dao hanh snippets", "duong dao danh snippets", "duong dao manh snippets", "duong dao anh 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: (((("duong dao anh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong dao anh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong dao anh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong dao anh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.