Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thue vu cach snippets" » "thue va cach snippets", "hue vu cach snippets", "thu vu cach snippets", "thue ve cach snippets", "thue vu bach 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: (((("thue vu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thue vu cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thue vu cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thue vu cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.