Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"doc bieu dat slippers" » "doc hieu dat slippers", "duoc bien dat slippers", "dac biet dat slippers", "doc bieu dac slippers", "doc lieu data slippers", "doc lieu dao slippers", "doc bieu dat slippery", "doc bieu 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: (((("doc bieu 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: (((("doc bieu dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doc bieu dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doc bieu dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.