Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"tran gia data slippers" » "tran gia dat slippers", "tran big data slippers", "tran a data slippers", "tran gia data slippery", "tran gia data 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: (((("tran gia data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tran gia data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tran gia data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tran gia data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.