Perhaps you should try some spelling variations:
"using java java slippers" » "using data java slippers", "using java java slippery", "using java java grippers"
"vi trung raw snippets" » "vi trung tran snippets", "vi trung tam snippets", "vi trung cap snippets", "va trung raw snippets", "viet trung raw snippets", "vien trung raw 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.

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