Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu thuoc de snippets" » "tu thuoc de snippets", "thu thuc de snippets", "tru thuoc de snippets", "thu thuoc do snippets", "thu thuoc he snippets", "thu thuoc dieu 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 thuoc de 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 thuoc de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu thuoc de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu thuoc de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.