Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"giang vo cho snippets" » "giang o cho snippets", "giang ve cho snippets", "giang van cho snippets", "giang vo co snippets", "giang mo cho snippets", "giang va cho 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: (((("giang vo 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: (((("giang vo cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( giang vo cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("giang vo cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.