Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi than hoc snippets" » "moi thanh hoc snippets", "mai thanh hoc snippets", "hoi thanh hoc snippets", "moi toan hoc snippets", "moi thai hoc snippets", "moi than doc 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: (((("moi than hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("moi than hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi than hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi than hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.