Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu pham cuc snippets" » "thuc pham cuc snippets", "thu phan cuc snippets", "thuc phan cuc snippets", "thu pham chuc snippets", "thu pham duc snippets", "thu pham cua 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 pham cuc 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 pham cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu pham cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu pham cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.