Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chuan tu hoc snippets" » "chua tu hoc snippets", "chuan muc hoc snippets", "chuan ted hoc snippets", "chuan te 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: (((("chuan tu 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: (((("chuan tu hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chuan tu hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chuan tu hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.