Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van kien cuc snippets" » "van tien cuc snippets", "van hien cuc snippets", "van chien cuc snippets", "van dien cuc snippets", "van kien thuc snippets", "van kien truc 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: (((("van kien cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van kien cuc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van kien cuc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van kien cuc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.