Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"ruc hoc hanh snippets" » "ruc hoc nhanh snippets", "ruc hoc thanh snippets", "ruc hoc anh snippets", "luc hoc hanh snippets", "duc hoc hanh snippets", "rut hoc hanh snippets", "ruc hoc hanh slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("ruc hoc hanh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ruc hoc hanh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ruc hoc hanh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ruc hoc hanh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.