Perhaps you should try some spelling variations:
"vi trinh danh slippery" » "vi trinh dinh slippery", "vi trinh dan slippery", "vi trinh anh slippery", "vi tinh danh slippery", "va trinh danh slippery", "viet trinh danh slippery", "vi trinh danh slippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"vi trinh danh slippery\") OR (\"using java java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( vi trinh danh slippery ) OR ( using java java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi trinh danh slippery") OR ("using java java snippets"))) OR ("locating bug code snippets"))*.