Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu cac cong snippets" » "thu cua cong snippets", "tu cac cong snippets", "thu xac cong snippets", "thu cuc cong 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: (((("thu cac cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu cac cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu cac cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu cac cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.