Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"van tu a7 snippets" » "van thu a7 snippets", "van du a7 snippets", "ban tu a7 snippets", "van cu a7 snippets", "van tu 07 snippets", "van tu a 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: (((("van tu a7 snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• Removing quotes may allow a broader search: (((( van tu a7 snippets ) or ( python using java snippets ))) or ( locating bug core snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("van tu a7 snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.