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