Perhaps you should try some spelling variations:
"den nang thep snippets" » "den bang thep snippets", "den nang thuc snippets", "den tang theo snippets", "dun nang thep snippets", "dung nang thep snippets", "da nang thep snippets", "den nang thep 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: (((("den nang thep snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den nang thep snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den nang thep snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den nang thep snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.