Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"lan anh dat slippers" » "van anh dat slippers", "tuan anh dat slippers", "lan thanh dat slippers", "lan lanh dao slippers", "lan dinh dat slippers", "lan anh dat slippery", "lan anh 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: (((("lan anh 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: (((("lan anh dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan anh dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan anh dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.