Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach tiep do snippets" » "cach tieu do snippets", "cach thien do snippets", "cach thiet do snippets", "cach tiep doi snippets", "cach tiep de snippets", "cach tien do 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: (((("cach tiep do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach tiep do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach tiep do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach tiep do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.