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