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