Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao van bon snippets" » "cac van bon snippets", "dao van bon snippets", "cao dang bon snippets", "cao van ban snippets", "cao van dong snippets", "cao van cong 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: (((("cao van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao van bon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao van bon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao van bon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.