Perhaps you should try some spelling variations:
"trong cach thuc snippets" » "trong cac thuc snippets", "trong mach thuc snippets", "trong canh thuc snippets", "trong anh thuc snippets", "trong cac thu snippets"
"dung va java slippers" » "dung java java slippers", "dung va java slippery", "dung va java grippers"
"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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung va java slippers\") OR (\"trong cach thuc snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung va java slippers ) OR ( trong cach thuc snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung va java slippers") OR ("trong cach thuc snippets"))) OR ("locating bug code snippets"))*.