Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hang hoa do8 snippets" » "hang khoa do8 snippets", "thanh hoa do8 snippets", "hang va do8 snippets", "hang hoa doi snippets", "hang hoa doc snippets", "hang hoa don 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: (((("hang hoa do8 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang hoa do8 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang hoa do8 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang hoa do8 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.