Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi tinh van slippers" » "vi trinh van slippers", "vi dinh van slippers", "vi tinh va slippers", "va tinh van slippers", "vi tinh van slippery", "vi tinh van grippers"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vi tinh van slippers") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( vi tinh van slippers ) or ( using java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi tinh van slippers") or ("using java java snippets"))) or ("locating bug core snippets"))*.