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