Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc len con snippets" » "quoc lan con snippets", "quoc tien con snippets", "quoc te con snippets", "quoc len cong snippets", "quoc lon con snippets", "quoc le con 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: (((("quoc len con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc len con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc len con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc len con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.