Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"anh viec dat slippers" » "anh viet dat slippers", "danh viet dat slippers", "bang viec dat slippers", "anh vien dai slippers", "anh vien da slippers", "anh viec va slippers", "anh viec dat slippery", "anh viec 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: (((("anh viec 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: (((("anh viec dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh viec dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh viec dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.