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