Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van dien cua snippets" » "van tien cua snippets", "van hien cua snippets", "van kien cua snippets", "van dieu cua snippets", "van dien cu snippets", "van dien cuc 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 dien cua 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 dien cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dien cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dien cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.