Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cau treo hoc snippets" » "cau theo hoc snippets", "cau tren hoc snippets", "cau triet hoc snippets", "cau te hoc snippets", "cau tri 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: (((("cau treo 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: (((("cau treo hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cau treo hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cau treo hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.