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