Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"len thoi de snippets" » "len troi de snippets", "ren thoi de snippets", "le thoi de snippets", "len khoi de snippets", "len thoi diem snippets", "len thai den 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: (((("len thoi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("len thoi de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( len thoi de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("len thoi de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.