Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"lua hoang du snippets" » "luu hoang du snippets", "quan hoang du snippets", "tuan hoang du snippets", "lua hoang duy snippets", "lua hoang duc snippets", "lua hoang de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("lua hoang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("lua hoang du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lua hoang du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lua hoang du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.