Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu buoc hoc snippets" » "thu quoc hoc snippets", "thu buong hoc snippets", "thu thuoc hoc snippets", "thu duoc hoc snippets", "thu buoc khoi 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 buoc 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 buoc hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu buoc hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu buoc hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.