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