Perhaps you should try some spelling variations:
"using java java slippers" » "using data java slippers", "using java java slippery", "using java java grippers"
"va trinh tu snippets" » "van trinh tu snippets", "va tinh tu snippets", "lap trinh tu snippets", "va trinh ky snippets", "va trinh do 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: "((((\"va trinh tu snippets\") OR (\"using java java slippers\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( va trinh tu snippets ) OR ( using java java slippers ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("va trinh tu snippets") OR ("using java java slippers"))) OR ("locating bug code snippets"))*.