Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoa toan he snippets" » "hoa tan he snippets", "hop toan he snippets", "hoa than he snippets", "hoa toan ho snippets", "hoa toan ke snippets", "hoa toan ve 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: (((("hoa toan 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: (((("hoa toan he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoa toan he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoa toan he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.