Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den choi cho snippets" » "den coi cho snippets", "len choi cho snippets", "ben chi cho snippets", "den hoi cho snippets", "den choi chu snippets", "den nhoi 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: (((("den choi 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: (((("den choi cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den choi cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den choi cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.