Perhaps you should try some spelling variations:
"vien trung ha snippets" » "vien truong ha snippets", "viet trung ha snippets", "mien trung ha snippets", "vien trung hoc snippets", "vien trung tam snippets", "vien trung cap snippets", "vien trung ha slippers"
"using raw java snippets" » "using real java snippets", "using a java snippets", "using low java snippets", "using raw java slippers"
"locating bug code snippets" » "locating bug code slippers", "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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("vien trung ha snippets") or ("using raw java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vien trung ha snippets") OR ("using raw java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vien trung ha snippets ) or ( using raw java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vien trung ha snippets") or ("using raw java snippets"))) or ("locating bug code snippets"))*.