Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dau luan ho snippets" » "dan luan ho snippets", "dat luan ho snippets", "khau luan ho snippets", "dau luan hoc snippets", "dau luan pho snippets", "dau xuan ho 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: (((("dau luan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dau luan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dau luan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dau luan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.