Perhaps you should try some spelling variations:
"trong hai data slippers" » "trong thai data slippers", "trong tai data slippers", "trong hoat data slippers", "trong cai dat slippers", "trong a data slippers", "trong hoi dat slippers", "trong hai data slippery", "trong hai data grippers"
"dung java java snippets" » "dung va java snippets"
"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: (((("trong hai 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: (((("trong hai data slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong hai data slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong hai data slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.