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