Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu nhat hoa snippets" » "thu nhap hoa snippets", "thu thuat hoa snippets", "thu ha hoa snippets", "thu nhat nhoa snippets", "thu chat hoa snippets", "thu nhan hoa 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: (((("thu 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: (((("thu nhat hoa snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu nhat hoa snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu nhat hoa snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.