Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan giang ve snippets" » "dan gian ve snippets", "van giang ve snippets", "manh giang ve snippets", "dan giang le snippets", "dan giang vo 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: (((("dan giang ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan giang ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan giang ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan giang ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.