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