Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu nha hoc snippets" » "thu nhap hoc snippets", "thu nhat hoc snippets", "thu nhan hoc snippets", "thu nha thuoc snippets", "thu khoa hoc snippets", "thu nha nuoc 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 nha hoc 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 nha hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu nha hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu nha hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.