Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"don dan cach snippets" » "don dan cac snippets", "don dan canh snippets", "don nhan cach snippets", "dong dan cach snippets", "do dan cach snippets", "doi dan cach 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: (((("don dan 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: (((("don dan cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( don dan cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("don dan cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.