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