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