Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cac nhat hoa snippets" » "cac nha hoa snippets", "cac nhan hoa snippets", "cac chat hoa snippets", "cac nhat nhoa 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: (((("cac nhat hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cac nhat hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cac nhat hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cac nhat hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.