Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"viet truong va snippets" » "viet trung va snippets", "vien truong va snippets", "viet trong va snippets", "viet truong dai snippets", "viet truong cao snippets", "viet truong dao snippets"
"using a java snippets" » "using _ 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: (((("viet truong va snippets") or ("using a java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("viet truong va snippets") OR ("using a java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( viet truong va snippets ) or ( using a java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("viet truong va snippets") or ("using a java snippets"))) or ("locating bug core snippets"))*.