Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"anh luat du snippets" » "hanh luat du snippets", "nganh luat du snippets", "hinh luat du snippets", "anh luat dau snippets", "anh luat su snippets", "anh luat tu 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: (((("anh luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("anh luat du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( anh luat du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("anh luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.