Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets"
"van trinh thi snippets" » "van thinh thi snippets", "van tinh thi snippets", "dan trinh thi snippets", "van trinh tai snippets", "van trinh thiet snippets", "van trinh tu snippets"
"locating bug core snippets" » "locating bug code snippets"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("van trinh thi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( van trinh thi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("van trinh thi snippets"))) or ("locating bug core snippets"))*.