Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu ca cham snippets" » "thu cau cham snippets", "thu va cham snippets", "thu co cham snippets", "thu cua cham snippets", "thu ha cham snippets", "thu ba cham 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 ca cham 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 ca cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu ca cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu ca cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.