Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc nhat de snippets" » "hoc phat de snippets", "hoc chat de snippets", "hoc hat de snippets", "hoc nhat ve snippets", "hoc nhat le snippets", "hoc chat deo 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 nhat de 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 nhat de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc nhat de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc nhat de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.