Perhaps you should try some spelling variations:
"using java code snippets" » "using data 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("tran sach han snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tran sach han snippets"))) OR ("locating bug core snippets"))*.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tran sach han snippets ))) or ( locating bug core snippets ))*.