Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu duc do snippets" » "thu tuc do snippets", "tho duc do snippets", "thu muc do snippets", "thu duc dao snippets", "thu duoc do 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 duc do 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 duc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu duc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu duc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.