Perhaps you should try some spelling variations:
"rang dung phan snippets" » "dang dung phan snippets", "rang dong phan snippets", "quang dung phan snippets", "rang dung nhan snippets", "rang dung luan snippets", "rang dung ha snippets"
"dung java java slippers" » "dung va java slippers", "dung java java slippery", "dung java java grippers"
"locating bug code snippets" » "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: (((("rang dung phan snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("rang dung phan snippets") OR ("dung java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( rang dung phan snippets ) or ( dung java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("rang dung phan snippets") or ("dung java java slippers"))) or ("locating bug code snippets"))*.