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