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