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