Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc han rok snippets" » "hoc phan rok snippets", "hoc hanh rok snippets", "hoc chan rok snippets", "hoc hang rok snippets", "hoc than roi 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: (((("hoc han rok snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc han rok snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc han rok snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc han rok snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.