Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"san vu hoan snippets" » "san vu hoang snippets", "san su hoan snippets", "san thu hoan snippets", "van vu hoan snippets", "san va hoan snippets", "han vu hoan 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: (((("san vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("san vu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( san vu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("san vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.