Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"using java java snippets" » "using data java snippets", "using java java slippers"
"van cong van snippets" » "van dong van snippets", "van phong van snippets", "phan cong van snippets", "van cong vang snippets", "van cong san snippets", "van song van snippets", "van cong van slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java java snippets") or ("van cong van snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java java snippets") OR ("van cong van snippets"))) OR ("locating bugs code snippets"))*.
• Removing quotes may allow a broader search: (((( using java java snippets ) or ( van cong van snippets ))) or ( locating bugs code snippets ))*.