Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua quoc con snippets" » "cua nuoc con snippets", "cua thuoc con snippets", "cua quoc cong snippets", "cua quoc son snippets", "cua quoc co 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: (((("cua quoc 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: (((("cua quoc con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua quoc con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua quoc con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.