Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"cong co thi snippets" » "dong co thi snippets", "cong cu thi snippets", "cong so thi snippets", "cong cao thi snippets", "cong co thai snippets", "cong do thi 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: (((("python using java snippets") OR ("cong co thi snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cong co thi snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cong co thi snippets"))) or ("locating bug core snippets"))*.