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