Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can nen cho snippets" » "cac nen cho snippets", "can len cho snippets", "can benh cho snippets", "can nen co snippets", "can dien 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: (((("can nen 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: (((("can nen cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can nen cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can nen cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.