Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tat cham snippets" » "ban tam cham snippets", "ban toc cham snippets", "ban va cham snippets", "ban tai cham snippets", "ban dat cham snippets", "ban tay 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: (((("ban tat 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: (((("ban tat cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tat cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tat cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.