Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"va truong son snippets" » "va truong code snippets", "va truong bo snippets", "van truong son snippets", "xa truong son snippets", "va thuong son snippets"
"using java java snippets" » "using data java snippets"

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

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