Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hon khoa he snippets" » "hong khoa he snippets", "von khoa he snippets", "hoc khoa he snippets", "hon hoa he snippets", "hon khoa hoc snippets", "hon khong he 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: (((("hon khoa he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hon khoa he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hon khoa he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hon khoa he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.