Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"when cho du snippets" » "khien cho du snippets", "dien cho du snippets", "han cho du snippets", "when cho cu snippets", "when cho tu snippets", "when cho duoc 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: (((("when cho 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: (((("when cho du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( when cho du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("when cho du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.