Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi anh tuan snippets" » "vi hanh tuan snippets", "vu anh tuan snippets", "va anh tuan snippets", "vi anh quan snippets", "vi anh tran snippets", "vi anh luan 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 anh tuan snippets") or ("using java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vi anh tuan snippets") OR ("using java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vi anh tuan snippets ) or ( using java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vi anh tuan snippets") or ("using java java snippets"))) or ("locating bug core snippets"))*.