Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu mo chon snippets" » "thu mo cho snippets", "thu mo phong snippets", "thu moi chon snippets", "thu co chon snippets", "thu do chon 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 mo chon 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 mo chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu mo chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu mo chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.