Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kieu doan de snippets" » "kiem toan de snippets", "ket doan de snippets", "kieu van de snippets", "kieu dan de snippets", "kieu doan do snippets", "kieu toan de 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: (((("kieu doan 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: (((("kieu doan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kieu doan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kieu doan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.