Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"doc trinh khoi snippets" » "doc trinh hoi snippets", "doc trinh khoa snippets", "doc trinh khai snippets", "doc tinh khoi snippets", "doi trinh khoi snippets", "hoc trinh khoi 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 ("doc trinh khoi snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doc trinh khoi snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doc trinh khoi snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doc trinh khoi snippets"))) or ("locating bug core snippets"))*.