Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"vi truong son snippets" » "vi truong code snippets", "vi truong bo snippets", "vi trung son snippets", "va truong son snippets", "vu truong son snippets"
"using java java snippets" » "using data java snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vi truong son snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( vi truong son snippets ) or ( using java java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("vi truong son snippets") or ("using java java snippets"))) or ("locating bug core snippets"))*.