Perhaps you should try some spelling variations:
"vu thuong son snippets" » "vu truong son snippets", "vu thuong con snippets", "vu thuong dong snippets", "va thuong son snippets", "tu thuong son snippets", "yeu thuong son snippets"
"using data java snippets" » "using java java snippets", "using sat java snippets", "missing data java 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.

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