Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc ha do snippets" » "thu ha do snippets", "thuc va do snippets", "thuc hanh do snippets", "thuc hat do snippets", "thuc xa do 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: (((("thuc ha do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thuc ha do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc ha do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc ha do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.