Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"using java java snippets" » "using data java snippets"
"vi trung lap snippets" » "vi trung cap snippets", "vi truong lam snippets", "vi truong lop snippets", "va trung lap snippets", "viet trung lap snippets", "vien trung lap 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 trung lap 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 trung lap snippets") OR ("using java java snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( vi trung lap snippets ) or ( using java java snippets ))) or ( locating bug core snippets ))*.