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