Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc vu hoan snippets" » "luoc su hoan snippets", "luoc va hoan snippets", "luoc ve hoan snippets", "luoc vu hoang snippets", "luoc thu 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: (((("luoc 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: (((("luoc vu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc vu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.