Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java java slippers" » "using data java slippers", "using java java slippery", "using java java grippers"
"vi duong van snippets" » "vi duong va snippets", "vi luong va snippets", "vi dang van snippets", "vi luong van snippets", "va duong van snippets", "vu duong van 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: "((((\"using java java slippers\") OR (\"vi duong van snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( using java java slippers ) OR ( vi duong van snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java slippers") OR ("vi duong van snippets"))) OR ("locating bugs code snippets"))*.