Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"doc van lu snippets" » "do van lu snippets", "hoc van lu snippets", "duc van lu snippets", "doc van luc snippets", "doc van du snippets", "doc van le snippets", "doc van lu slippers"

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: (((("doc van lu snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets"))~.
• Removing quotes may allow a broader search: (((( doc van lu snippets ) or ( python using java snippets ))) or ( locating bugs code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doc van lu snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.