Perhaps you should try some spelling variations:
"vien truong a slippers" » "mien trung a slippers", "vien thong a slippers", "bien trong a slippers", "vien truong va slippers", "vien truong ca slippers", "vien truong sa slippers", "vien truong a slippery", "vien truong a grippers"
"using java java snippets" » "using data java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java java snippets") or ("vien truong a slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java snippets") OR ("vien truong a slippers"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( vien truong a slippers ))) or ( locating bug code snippets ))*.