Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can moi hoc snippets" » "ban moi hoc snippets", "cac moi hoc snippets", "chat moi hoc snippets", "can hoi hoc snippets", "can mon hoc snippets", "can mo hoc 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: (((("can moi 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: (((("can moi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can moi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can moi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.