Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu tiem can snippets" » "thu thiem can snippets", "nhu tiem can snippets", "thu kiem can snippets", "thu tiep can snippets", "thu tiem nang snippets", "thu dieu can 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 tiem can 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 tiem can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu tiem can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tiem can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.