Perhaps you should try some spelling variations:
"phap luan tranh slippers" » "phap luan thanh slippers", "phap lan tranh slippers", "phap quan thanh slippers", "phap luat tranh slippers", "phap hoan tranh slippers", "phap luan tranh slippery", "phap luan tranh 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: (((("dung java java snippets") or ("phap luan tranh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("phap luan tranh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( phap luan tranh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("phap luan tranh slippers"))) or ("locating bug code snippets"))*.