Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tieu can hoc snippets" » "tiep can hoc snippets", "dieu can hoc snippets", "tiem can hoc snippets", "tieu van hoc snippets", "tieu dan hoc snippets", "tieu cao 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: (((("tieu can 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: (((("tieu can hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tieu can hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tieu can hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.