Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tham day doc snippets" » "tham dam doc snippets", "phap day doc snippets", "pham duy doc snippets", "tham day hoc snippets", "tham dat doc snippets", "tham duy doc 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: (((("tham day doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tham day doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tham day doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tham day doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.