Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"va trung cap snippets" » "va trung code snippets", "va truong cao snippets", "va trung tam snippets", "ba trung cap snippets", "ha trung cap snippets", "va thuong cap snippets"
"using java java snippets" » "using data java 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: "((((\"using java java snippets\") OR (\"va trung cap snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using java java snippets ) OR ( va trung cap snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java java snippets") OR ("va trung cap snippets"))) OR ("locating bug core snippets"))*.