Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc chinh so snippets" » "hoan chinh so snippets", "hoc sinh so snippets", "hoc kinh so snippets", "hoc chinh su snippets", "hoc chinh cho snippets", "hoc dinh so 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 chinh so 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 chinh so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chinh so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chinh so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.