Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu hoc phe snippets" » "phau hoc phe snippets", "phuc hoc phe snippets", "pho hoc phe snippets", "phu hoc pho snippets", "phu hoc he snippets", "phu hoc phi 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 hoc phe 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 hoc phe snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu hoc phe snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu hoc phe snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.