Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu sinh con snippets" » "thu minh con snippets", "thu kinh con snippets", "thuoc sinh con snippets", "thu sinh cong snippets", "thu sinh ton snippets", "thu sinh co 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 sinh con 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 sinh con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu sinh con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu sinh con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.