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

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 trinh vat slippery") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( vi trinh vat slippery ) or ( using java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi trinh vat slippery") or ("using java java snippets"))) or ("locating bug core snippets"))*.