Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han vu cho snippets" » "han vui cho snippets", "hanh vu cho snippets", "han va cho snippets", "han vu cao snippets", "han cu cho snippets", "han uu 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: (((("han vu 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: (((("han vu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han vu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han vu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.