Perhaps you should try some spelling variations:
"vi trung va snippets" » "vi truong va snippets", "vi trang va snippets", "vi trung ha snippets", "va trung va snippets", "viet trung va snippets", "vien trung va snippets", "vi trung va slippers"
"using low java snippets" » "using low 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: (((("using low java snippets") or ("vi trung va snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using low java snippets") OR ("vi trung va snippets"))) OR ("locating bug code snippets"))*.
• Removing quotes may allow a broader search: (((( using low java snippets ) or ( vi trung va snippets ))) or ( locating bug code snippets ))*.