Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu danh di snippets" » "thu canh di snippets", "thu anh di snippets", "thu dang di snippets", "thu danh du snippets", "thu xanh di snippets", "thu danh dien 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 danh di 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 danh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu danh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu danh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.