Perhaps you should try some spelling variations:
"using rate code snippets" » "using waste code snippets", "using data code snippets", "using raw code snippets"
"tran sach han snippets" » "tran mach han snippets", "ngan sach han snippets", "tran manh han snippets", "tran sach tham snippets", "tran sach danh snippets", "tran sach nang snippets"
"locating bug core snippets" » "locating bug code snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"using rate code snippets\") OR (\"tran sach han snippets\"))) OR (\"locating bug core snippets\"))~".
• Removing quotes may allow a broader search: (((( using rate code snippets ) OR ( tran sach han snippets ))) OR ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using rate code snippets") OR ("tran sach han snippets"))) OR ("locating bug core snippets"))*.