Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho tu che snippets" » "choi tu che snippets", "chon tu che snippets", "cho cu che snippets", "cho tu chu snippets", "cho tu chi snippets", "cho ty che 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: (((("cho tu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho tu che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho tu che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho tu che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.