Perhaps you should try some spelling variations:
"van truong thi snippets" » "van truong thpt snippets", "van truong dai snippets", "van luong thi snippets", "tang truong thi snippets", "xuan truong thi snippets", "vien truong thi snippets", "van truong thi 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: (((("using raw java snippets") or ("van truong thi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using raw java snippets") OR ("van truong thi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using raw java snippets ) or ( van truong thi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using raw java snippets") or ("van truong thi snippets"))) or ("locating bug code snippets"))*.