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