Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach voi hoc snippets" » "cach noi hoc snippets", "cach thoi hoc snippets", "mach vi hoc snippets", "cach hoi hoc snippets", "cach vi hoc snippets", "cach voi ho 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 voi hoc 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 voi hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach voi hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach voi hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.