Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"van duong do snippets" » "van dong do snippets", "van dung do snippets", "van phong do snippets", "van duong dao snippets", "van duong doi snippets", "van duong co 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: "((((\"van duong do snippets\") OR (\"using java java snippets\"))) OR (\"locating bugs code snippets\"))~".
• Removing quotes may allow a broader search: (((( van duong do snippets ) OR ( using java java snippets ))) OR ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van duong do snippets") OR ("using java java snippets"))) OR ("locating bugs code snippets"))*.