Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu tich cac snippets" » "chu tich cac snippets", "chu thich cac snippets", "thue tinh cac snippets", "thu tich va snippets", "thu tich bao 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 tich cac 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 tich cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu tich cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu tich cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.