Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc cao cu snippets" » "quoc bao cu snippets", "quoc cac cu snippets", "quoc cho cu snippets", "quoc cao chu snippets", "quoc tao cu snippets", "quoc cao su 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 cao cu 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 cao cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc cao cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc cao cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.